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Finding the Fourth Proportional to 6,637.82, 9,963.52 and 5,479.88

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Solution

The fourth proportional to 6,637.82, 9,963.52 and 5,479.88 is: 8,225.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,637.82 : 9,963.52 = 5,479.88 : x
  2. Step 2: Convert to fraction form
    6,637.82/9,963.52 = 5,479.88/x
  3. Step 3: Cross multiply
    6,637.82x = 9,963.52 × 5,479.88
  4. Step 4: Simplify right side
    6,637.82x = 54,598,893.98
  5. Step 5: Solve for x
    x = 54,598,893.98/6,637.82
  6. Step 6: Final answer
    x = 8,225.43

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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.