Home / 1,309.13-1,962.10-614.87

Finding the Fourth Proportional to 1,309.13, 1,962.10 and 614.87

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Solution

The fourth proportional to 1,309.13, 1,962.10 and 614.87 is: 921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.13 : 1,962.10 = 614.87 : x
  2. Step 2: Convert to fraction form
    1,309.13/1,962.10 = 614.87/x
  3. Step 3: Cross multiply
    1,309.13x = 1,962.10 × 614.87
  4. Step 4: Simplify right side
    1,309.13x = 1,206,436.12
  5. Step 5: Solve for x
    x = 1,206,436.12/1,309.13
  6. Step 6: Final answer
    x = 921.56

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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.