Noah planned a parallelogram-shaped sidewalk to
lead from the street to the front door of his house. He
realized the walkway was too short and the needs to
change the length to 72 feet. He wrote a ratio to find the
change in the scale factor
+
L
24 ft
72 ft =
NE
The change in the scale factor is
The change of scale means that 1 inch represented
feet, but now 1 inch represents feet.