Denise G. answered • 04/11/19
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This problem can be solved by setting up a proportion. First turned the fractions to decimals. Let x = the actual length of the pier.
0.125 inches on the blueprint = 19.75 inches on the blueprint
5 ft x
You can solve this by cross multiplying
(0.125)(x) = (5)(19.75)
0.125x = 98.75
Divide both sides by 0.125
0.125x/0.125 = 98.75/0.125
x=790 ft is the length of the pier
