Home / 1,308.61-1,962.10-614.85

Finding the Fourth Proportional to 1,308.61, 1,962.10 and 614.85

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Solution

The fourth proportional to 1,308.61, 1,962.10 and 614.85 is: 921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.61 : 1,962.10 = 614.85 : x
  2. Step 2: Convert to fraction form
    1,308.61/1,962.10 = 614.85/x
  3. Step 3: Cross multiply
    1,308.61x = 1,962.10 × 614.85
  4. Step 4: Simplify right side
    1,308.61x = 1,206,397.19
  5. Step 5: Solve for x
    x = 1,206,397.19/1,308.61
  6. Step 6: Final answer
    x = 921.89

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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.