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Finding the Fourth Proportional to 3,374.60, 5,061.90 and 3,309.80

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Solution

The fourth proportional to 3,374.60, 5,061.90 and 3,309.80 is: 4,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,374.60 : 5,061.90 = 3,309.80 : x
  2. Step 2: Convert to fraction form
    3,374.60/5,061.90 = 3,309.80/x
  3. Step 3: Cross multiply
    3,374.60x = 5,061.90 × 3,309.80
  4. Step 4: Simplify right side
    3,374.60x = 16,753,876.62
  5. Step 5: Solve for x
    x = 16,753,876.62/3,374.60
  6. Step 6: Final answer
    x = 4,964.70

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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.