SOLUTION: Problem: the instructor of an introductory computer course wants to make a wall chart of a computer desktop for students.to make it realistic the desktop icons must be proportional

Question 331630: Problem: the instructor of an introductory computer course wants to make a wall chart of a computer desktop for students.to make it realistic the desktop icons must be proportional to the size of her 6ftX6ft wall chart. If the icons on her 15"X15" PC screen are 3/8" X 3/8" How large should they be on her wall chart?
I think I have to find out what 3/8 to 15 is ,then use that to calculate for 6ftX6ft chart. Im not able to reason out a formula .
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

6 feet is 72 inches. So you need to find out what would be in the same ratio to 72 inches as 3/8 inch is to 15 inches. 3/8 inch is 0.375 inches, so:

Just cross-multiply and do the arithmetic to solve for

John

My calculator said it, I believe it, that settles it

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