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Finding the Fourth Proportional to 8,617.90, 12,920.82 and 4,402.46

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Solution

The fourth proportional to 8,617.90, 12,920.82 and 4,402.46 is: 6,600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.90 : 12,920.82 = 4,402.46 : x
  2. Step 2: Convert to fraction form
    8,617.90/12,920.82 = 4,402.46/x
  3. Step 3: Cross multiply
    8,617.90x = 12,920.82 × 4,402.46
  4. Step 4: Simplify right side
    8,617.90x = 56,883,332.47
  5. Step 5: Solve for x
    x = 56,883,332.47/8,617.90
  6. Step 6: Final answer
    x = 6,600.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.