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Finding the Fourth Proportional to 6,639.15, 9,964.87 and 3,354.55

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Solution

The fourth proportional to 6,639.15, 9,964.87 and 3,354.55 is: 5,034.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.15 : 9,964.87 = 3,354.55 : x
  2. Step 2: Convert to fraction form
    6,639.15/9,964.87 = 3,354.55/x
  3. Step 3: Cross multiply
    6,639.15x = 9,964.87 × 3,354.55
  4. Step 4: Simplify right side
    6,639.15x = 33,427,640.23
  5. Step 5: Solve for x
    x = 33,427,640.23/6,639.15
  6. Step 6: Final answer
    x = 5,034.93

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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.