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Finding the Fourth Proportional to 8,761.82, 13,141.31 and 2,520.41

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Solution

The fourth proportional to 8,761.82, 13,141.31 and 2,520.41 is: 3,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761.82 : 13,141.31 = 2,520.41 : x
  2. Step 2: Convert to fraction form
    8,761.82/13,141.31 = 2,520.41/x
  3. Step 3: Cross multiply
    8,761.82x = 13,141.31 × 2,520.41
  4. Step 4: Simplify right side
    8,761.82x = 33,121,489.14
  5. Step 5: Solve for x
    x = 33,121,489.14/8,761.82
  6. Step 6: Final answer
    x = 3,780.21

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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.