# How do you know if the pair 4/3 and 16/12 form a proportion?

You can divide the numerator and the denominator of $\frac{16}{12}$ by $\frac{4}{4}$, which will simplify it to $\frac{4}{3}$
$\frac{4}{3} = \frac{4}{3}$, hence, $\frac{4}{3} = \frac{16}{12}$