Answer:
4
Explanation:
- let the smaller triangle be PQR and bigger triangle be ABC
- Let, AB = 4, BC = 3, AC = 5 and
PQ = 3x+8, QR = 15, PR = 25.
- since the two triangles are similar, we have


by cross multiplying,
4*15 = (3x+8)*3
60=9x+24
subtracting both sides by 24,
36=9x
dividing both sides by 9,
4=x