Question

What is the first step that you have to do in order to solve the proportion: 1 inch/10 miles = 7 inches/z miles

10 * z = 1 * 7

1 * z = 10 * 7

7 * z = 10 * 1

1 * 7

Answer 1

If your proportion is
`(1)/(10)=(7)/(z)`, you cross multiply to solve for z: 1 * z = 10 * 7, second choice above