Home / 1,252.64-1,728-755

Finding the Fourth Proportional to 1,252.64, 1,728 and 755

Calculator

Solution

The fourth proportional to 1,252.64, 1,728 and 755 is: 1,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.64 : 1,728 = 755 : x
  2. Step 2: Convert to fraction form
    1,252.64/1,728 = 755/x
  3. Step 3: Cross multiply
    1,252.64x = 1,728 × 755
  4. Step 4: Simplify right side
    1,252.64x = 1,304,640
  5. Step 5: Solve for x
    x = 1,304,640/1,252.64
  6. Step 6: Final answer
    x = 1,041.51

Related Problems

Find fourth proportional to 626.32, 864 and 377.50
Half scale
Find fourth proportional to 2,505.28, 3,456 and 1,510
Double scale
Find fourth proportional to 1,253.64, 1,729.38 and 756
Similar ratio
Find fourth proportional to 1,878.96, 2,592 and 1,132.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.