On a blueprint, the scale indicates that 4 centimeters
represent 12 feet. What is the length of a room that is
5 centimeters long and 35 centimeters wide on the blueprint?
3.5 cm
5 cm
set up a proportion of x over 4 and x over 12 fill in the length or width that you do know. Then cross multiply and solve the simple equation you get: for example) 60 = 4x. Just divide both sides by 4 to get x by itself.
