Home / 1,137.66-1,706.49-521.21

Finding the Fourth Proportional to 1,137.66, 1,706.49 and 521.21

Calculator

Solution

The fourth proportional to 1,137.66, 1,706.49 and 521.21 is: 781.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.66 : 1,706.49 = 521.21 : x
  2. Step 2: Convert to fraction form
    1,137.66/1,706.49 = 521.21/x
  3. Step 3: Cross multiply
    1,137.66x = 1,706.49 × 521.21
  4. Step 4: Simplify right side
    1,137.66x = 889,431.12
  5. Step 5: Solve for x
    x = 889,431.12/1,137.66
  6. Step 6: Final answer
    x = 781.81

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.