Home / 1,472.25-2,207.91-691.77

Finding the Fourth Proportional to 1,472.25, 2,207.91 and 691.77

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Solution

The fourth proportional to 1,472.25, 2,207.91 and 691.77 is: 1,037.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.25 : 2,207.91 = 691.77 : x
  2. Step 2: Convert to fraction form
    1,472.25/2,207.91 = 691.77/x
  3. Step 3: Cross multiply
    1,472.25x = 2,207.91 × 691.77
  4. Step 4: Simplify right side
    1,472.25x = 1,527,365.90
  5. Step 5: Solve for x
    x = 1,527,365.90/1,472.25
  6. Step 6: Final answer
    x = 1,037.44

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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.