Use the proportion to convert millimeters to centimeters. 10mm/1cm=47mm/x

- The centimeter is defined as a unit of lenght. Its symbol is: "cm".

 - 1 centimeter=10 milimeters.

 - The milimeter is defined as a unit of lenght and its symbol is "mm".

 1. If you want to convert 47 milimeters to centimeters by using proportions, you have:

 10 mm/1 cm=47mm/x

 2. Then, you only have to clear the "x":

 (10 mm)x=(47mm)(1 cm)
 x=(47 mm)(1 cm)/10 mm

 3. Therefore, the result is:

 x=4.7 centimeters