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Finding the Fourth Proportional to 2,737, 4,105.42 and 789.20

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Solution

The fourth proportional to 2,737, 4,105.42 and 789.20 is: 1,183.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,737 : 4,105.42 = 789.20 : x
  2. Step 2: Convert to fraction form
    2,737/4,105.42 = 789.20/x
  3. Step 3: Cross multiply
    2,737x = 4,105.42 × 789.20
  4. Step 4: Simplify right side
    2,737x = 3,239,997.46
  5. Step 5: Solve for x
    x = 3,239,997.46/2,737
  6. Step 6: Final answer
    x = 1,183.78

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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.