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- Thread starter qazz
- Start date

- Joined
- Oct 6, 2005

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- 10,600

Welcome to our tutoring boards! :) This page summarizes some main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We prefer to help by having a...

www.freemathhelp.com

no, ive been out of school for 43 yrs, lol this is for my hobby . to make scaled inlays for my product

## Guidelines Summary

Welcome to our tutoring boards! :) This page summarizes some main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We prefer to help by having a...www.freemathhelp.com

- Joined
- Apr 22, 2015

- Messages
- 3,684

\(\displaystyle \frac{8.5 \text{ inch}}{8000 \text{ mile}} = 0.0010625 \text{ inch per mile}\)

We multiply by that conversion factor, to scale miles to size.

200 [imath]\times[/imath] 0.0010625 = 0.2125

Therefore, a distance of 0.2125 inch (17/80ths) on the small ball represents 200 miles on the big ball.

If we were to compare large to small, instead, then we'd obtain a conversion factor telling us that every inch on the small ball represents about 941.17647 miles on the big ball.

Whatcha building?

- Joined
- Jan 16, 2018

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Set up a proportion: 8.5 inches to 8000 miles as y inches to x milesno, ive been out of school for 43 yrs, lol this is for my hobby . to make scaled inlays for my product

8.5 inches/8000 miles = y inches / x miles

y = ( (8.5 inches)/(8000 miles) ) * x

Convert to the same units and divide to get the conversion factor.

i build custom pool cues, but working on a project for a friend,, u might have guessed, the 8000 miles is the earth. 8.5 is his project

\(\displaystyle \frac{8.5 \text{ inch}}{8000 \text{ mile}} = 0.0010625 \text{ inch per mile}\)

We multiply by that conversion factor, to scale miles to size.

200 [imath]\times[/imath] 0.0010625 = 0.2125

Therefore, a distance of 0.2125 inch (17/80ths) on the small ball represents 200 miles on the big ball.

If we were to compare large to small, instead, then we'd obtain a conversion factor telling us that every inch on the small ball represents about 941.17647 miles on the big ball.

Whatcha building?

- Joined
- Jun 18, 2007

- Messages
- 25,459

The responses above converts lines (perimeter). Be careful about conversion of projected areasi build custom pool cues, but working on a project for a friend,, u might have guessed, the 8000 miles is the earth. 8.5 is his project

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