Question

How do you write a proportion that you can use to convert 60 inches to centimeters?

Answer 1

`"60 in" = "152.4 cm"`

Explanation:

First find the equivalency between inches and centimeters.

`"1 in=2.54 cm"`, exactly.

There are two proportions (also called ratios or conversion factors).

`"1 in"/"2.54 cm"` and `"2.54 cm"/"1 in"`

Converting 60 inches to cm

Multiply the number of inches by the proportion that has cm in the numerator and 60 inches in the denominator. This will cancel inches and leave centimeters.

`60cancel"in"xx(2.54"cm")/(1 cancel"in")="152.4 cm"`