Home / 1,545.31-2,132.19-915.52

Finding the Fourth Proportional to 1,545.31, 2,132.19 and 915.52

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Solution

The fourth proportional to 1,545.31, 2,132.19 and 915.52 is: 1,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.31 : 2,132.19 = 915.52 : x
  2. Step 2: Convert to fraction form
    1,545.31/2,132.19 = 915.52/x
  3. Step 3: Cross multiply
    1,545.31x = 2,132.19 × 915.52
  4. Step 4: Simplify right side
    1,545.31x = 1,952,059.68
  5. Step 5: Solve for x
    x = 1,952,059.68/1,545.31
  6. Step 6: Final answer
    x = 1,263.22

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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.