Steps of Construction:
Step 1: Draw a line segment BC = 9 cm
Step 2: With B as center, draw an arc each above and below BC.
Step 3: With C as center, draw an arc each above and below BC.
Step 4: Join their points of intersection to obtain the perpendicular bisector of BC. Let it intersect BC at D
Step 5: From D, cut an arc of radius 5 cm and mark the point as A
Step 6: Join AB and AC
Thus, ΔFBE is the required triangle, each of whose sides is 3/4 the corresponding sides of the first triangle.