How wide is the actual house if a model house is 12 inches wide and it was built with a ratio of 3 inches : 4 meters?

1 Answer
Meave60
Jan 28, 2015

The ratio of 3 inches : 4 meters can be written as two fractions which can be used as conversion factors. They are #"3 inches"/"4 meters"# and #"4 meters"/"3 inches"#.

Now multiply 12 inches times the conversion factor that has meters in the numerator and inches in the denominator. This will cancel the inches and leave meters.

#"12 inches"# x #"4 meters"/"3 inches"# = #"16 meters"#

The width of the actual house is #"16 meters"#.

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