In the first big triangle let take base as 8 and for the second triangle i.e. the smaller one take base as 4.
As given that the both triangles have same angle and both are similar so:
[tex]\begin{gathered} \frac{Base\text{ from 1 triangle}}{\text{Base from 2 triangle}}=\frac{8}{4} \\ \frac{Base\text{ from 1 triangle}}{\text{Base from 2 triangle}}=2 \end{gathered}[/tex]