1 : 3000
Scale measurement as following:
4 centimeters are equal to 120 meters.
The scale factor = ?
First of all, let us learn about the definition of scale factor.
Scale factor means 1 unit on scale is equal to what length of actual measurement.
We are given that 4 cm on scale is equal to 120 meters of actual length.
We need to find nothing but how much 1 cm of scale is equal to actual length.
4 cm of scale = 120 meters or 12000 cm of actual length
Dividing by 4 on both sides, we get:
= 1 cm of scale = = 3000 cm of actual length
Therefore, the scale factor is <em>1 : 3000</em>