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Finding the Fourth Proportional to 6,640.92, 9,958.02 and 3,718.44

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Solution

The fourth proportional to 6,640.92, 9,958.02 and 3,718.44 is: 5,575.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.92 : 9,958.02 = 3,718.44 : x
  2. Step 2: Convert to fraction form
    6,640.92/9,958.02 = 3,718.44/x
  3. Step 3: Cross multiply
    6,640.92x = 9,958.02 × 3,718.44
  4. Step 4: Simplify right side
    6,640.92x = 37,028,299.89
  5. Step 5: Solve for x
    x = 37,028,299.89/6,640.92
  6. Step 6: Final answer
    x = 5,575.78

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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.