What is the formula to scale something down in inches for a copy machine?

Question by DizzyUpTheBlonde: What is the formula to scale something down in inches for a copy machine?
I know there is a formula one can use to set the zoom on a copy machine when you want a copy of something, but smaller or larger.

For instance, if you have an 8.5″x11″ document that you want to shrink to fit into a CD case (so, 4.75″x9.5″), you can use this formula to figure out what X and Y to set the zoom percentages to.

I’ve seen others use it. However, I’ve not been able to find this formula. Does any one out there know it?

Best answer:

Answer by ubiquitous_phi
Greetings,

Assuming you want the length to go from 11″ to 4.75″

This is a reduction of 4.75/11*100% = 43.2%

Regards

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