### Home > CC3 > Chapter 6 > Lesson 6.2.6 > Problem6-107

6-107.

Examine the diagram below. The smaller triangle is similar to the larger triangle. Write and solve a proportion to find $x$. It may be helpful to draw the two triangles separately.  Homework Help ✎

Draw two separate triangles. The larger triangle has base $10+8=18$.

$\frac{x}{8}=\frac{8}{18}$