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Finding the Fourth Proportional to 8,324.60, 12,486.90 and 3,392.92

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Solution

The fourth proportional to 8,324.60, 12,486.90 and 3,392.92 is: 5,089.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,324.60 : 12,486.90 = 3,392.92 : x
  2. Step 2: Convert to fraction form
    8,324.60/12,486.90 = 3,392.92/x
  3. Step 3: Cross multiply
    8,324.60x = 12,486.90 × 3,392.92
  4. Step 4: Simplify right side
    8,324.60x = 42,367,052.75
  5. Step 5: Solve for x
    x = 42,367,052.75/8,324.60
  6. Step 6: Final answer
    x = 5,089.38

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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.