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Finding the Fourth Proportional to 6,630.96, 9,939.96 and 2,738.64

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Solution

The fourth proportional to 6,630.96, 9,939.96 and 2,738.64 is: 4,105.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.96 : 9,939.96 = 2,738.64 : x
  2. Step 2: Convert to fraction form
    6,630.96/9,939.96 = 2,738.64/x
  3. Step 3: Cross multiply
    6,630.96x = 9,939.96 × 2,738.64
  4. Step 4: Simplify right side
    6,630.96x = 27,221,972.05
  5. Step 5: Solve for x
    x = 27,221,972.05/6,630.96
  6. Step 6: Final answer
    x = 4,105.28

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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.