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Finding the Fourth Proportional to 4,393.31, 6,591.48 and 2,747.89

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Solution

The fourth proportional to 4,393.31, 6,591.48 and 2,747.89 is: 4,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,393.31 : 6,591.48 = 2,747.89 : x
  2. Step 2: Convert to fraction form
    4,393.31/6,591.48 = 2,747.89/x
  3. Step 3: Cross multiply
    4,393.31x = 6,591.48 × 2,747.89
  4. Step 4: Simplify right side
    4,393.31x = 18,112,659.91
  5. Step 5: Solve for x
    x = 18,112,659.91/4,393.31
  6. Step 6: Final answer
    x = 4,122.79

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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.