Hello there! We are looking for the length of one of the triangles by finding the value of x. To find the missing length of the triangle, we can write and solve a proportion. Set it up like this:
x/4 = 11/10
This is because 4 and 10 are similar sides, so they go on the bottom. 11 and x are similar sides, so they go on the top. Let's cross multiply. 4 * 11 is 44. 10 * x is 10x. That's 44 = 10x. Now, divide each side by 10 to isolate the x. 10x/10 cancels out. 44/10 is 4.4. There. The missing length of the triangle is 4.4. x = 4.4.
