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Finding the Fourth Proportional to 8,279.78, 11,426.17 and 4,502.98

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Solution

The fourth proportional to 8,279.78, 11,426.17 and 4,502.98 is: 6,214.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.78 : 11,426.17 = 4,502.98 : x
  2. Step 2: Convert to fraction form
    8,279.78/11,426.17 = 4,502.98/x
  3. Step 3: Cross multiply
    8,279.78x = 11,426.17 × 4,502.98
  4. Step 4: Simplify right side
    8,279.78x = 51,451,775.16
  5. Step 5: Solve for x
    x = 51,451,775.16/8,279.78
  6. Step 6: Final answer
    x = 6,214.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.