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Finding the Fourth Proportional to 3,380.87, 5,068.98 and 1,819.31

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Solution

The fourth proportional to 3,380.87, 5,068.98 and 1,819.31 is: 2,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.87 : 5,068.98 = 1,819.31 : x
  2. Step 2: Convert to fraction form
    3,380.87/5,068.98 = 1,819.31/x
  3. Step 3: Cross multiply
    3,380.87x = 5,068.98 × 1,819.31
  4. Step 4: Simplify right side
    3,380.87x = 9,222,020.66
  5. Step 5: Solve for x
    x = 9,222,020.66/3,380.87
  6. Step 6: Final answer
    x = 2,727.70

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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.