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Finding the Fourth Proportional to 5,164.88, 7,737 and 2,387.72

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Solution

The fourth proportional to 5,164.88, 7,737 and 2,387.72 is: 3,576.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.88 : 7,737 = 2,387.72 : x
  2. Step 2: Convert to fraction form
    5,164.88/7,737 = 2,387.72/x
  3. Step 3: Cross multiply
    5,164.88x = 7,737 × 2,387.72
  4. Step 4: Simplify right side
    5,164.88x = 18,473,789.64
  5. Step 5: Solve for x
    x = 18,473,789.64/5,164.88
  6. Step 6: Final answer
    x = 3,576.81

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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.