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Finding the Fourth Proportional to 8,488.47, 12,732.25 and 2,644.63

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Solution

The fourth proportional to 8,488.47, 12,732.25 and 2,644.63 is: 3,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.47 : 12,732.25 = 2,644.63 : x
  2. Step 2: Convert to fraction form
    8,488.47/12,732.25 = 2,644.63/x
  3. Step 3: Cross multiply
    8,488.47x = 12,732.25 × 2,644.63
  4. Step 4: Simplify right side
    8,488.47x = 33,672,090.32
  5. Step 5: Solve for x
    x = 33,672,090.32/8,488.47
  6. Step 6: Final answer
    x = 3,966.80

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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.