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Finding the Fourth Proportional to 7,761.52, 11,645.32 and 4,472.82

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Solution

The fourth proportional to 7,761.52, 11,645.32 and 4,472.82 is: 6,710.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.52 : 11,645.32 = 4,472.82 : x
  2. Step 2: Convert to fraction form
    7,761.52/11,645.32 = 4,472.82/x
  3. Step 3: Cross multiply
    7,761.52x = 11,645.32 × 4,472.82
  4. Step 4: Simplify right side
    7,761.52x = 52,087,417.41
  5. Step 5: Solve for x
    x = 52,087,417.41/7,761.52
  6. Step 6: Final answer
    x = 6,710.98

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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.