To find the scale factor, we can divide. What is 15 divided by 4? You can think about this as the fraction

To find the result of \( 15 \div 4 \), you can perform the division:

\[ 15 \div 4 = 3.75 \]

Alternatively, you can express this as a fraction:

\[ \frac{15}{4} \]

This fraction can also be interpreted as:

\[ \frac{15}{4} = 3 \frac{3}{4} \quad \text{(which means 3 whole parts and a remainder of }\frac{3}{4}) \]

So, \( 15 \div 4 \) equals \( 3.75 \) or \( \frac{15}{4} \).