Problem:
In the scale used on a blueprint, 0.25 inches represents 4 feet. On the blueprint, what is the length of a room with an actual length of 32 feet?
Solution:
Consider the following diagram:
By cross-multiplication we solve by x:
[tex]x\text{ = }\frac{32\text{ x 0.25}}{4}\text{ = 2 in}[/tex]
Then, we can conclude that the length of a room with an actual length of 32 feet is 2 inches.
