You can solve this by setting up a proportion. 4/6 = x/9. Cross multiply to get 6x=36. Divide both sides by 6 to get x=6.
Answer: The length of LA is 6
Step-by-step explanation: This is because 9/6 is 1.5. So that means the triangle grew by Multiplying 1.5. So you multiply 4 by 1.5 and you get 6.
