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Finding the Fourth Proportional to 8,520.84, 12,781.26 and 2,677.90

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Solution

The fourth proportional to 8,520.84, 12,781.26 and 2,677.90 is: 4,016.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.84 : 12,781.26 = 2,677.90 : x
  2. Step 2: Convert to fraction form
    8,520.84/12,781.26 = 2,677.90/x
  3. Step 3: Cross multiply
    8,520.84x = 12,781.26 × 2,677.90
  4. Step 4: Simplify right side
    8,520.84x = 34,226,936.15
  5. Step 5: Solve for x
    x = 34,226,936.15/8,520.84
  6. Step 6: Final answer
    x = 4,016.85

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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.