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Finding the Fourth Proportional to 8,472.48, 12,708.48 and 3,279.52

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Solution

The fourth proportional to 8,472.48, 12,708.48 and 3,279.52 is: 4,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.48 : 12,708.48 = 3,279.52 : x
  2. Step 2: Convert to fraction form
    8,472.48/12,708.48 = 3,279.52/x
  3. Step 3: Cross multiply
    8,472.48x = 12,708.48 × 3,279.52
  4. Step 4: Simplify right side
    8,472.48x = 41,677,714.33
  5. Step 5: Solve for x
    x = 41,677,714.33/8,472.48
  6. Step 6: Final answer
    x = 4,919.19

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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.