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Finding the Fourth Proportional to 8,279.17, 12,424.22 and 3,897.88

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Solution

The fourth proportional to 8,279.17, 12,424.22 and 3,897.88 is: 5,849.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.17 : 12,424.22 = 3,897.88 : x
  2. Step 2: Convert to fraction form
    8,279.17/12,424.22 = 3,897.88/x
  3. Step 3: Cross multiply
    8,279.17x = 12,424.22 × 3,897.88
  4. Step 4: Simplify right side
    8,279.17x = 48,428,097.34
  5. Step 5: Solve for x
    x = 48,428,097.34/8,279.17
  6. Step 6: Final answer
    x = 5,849.39

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1.5x scale

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.