Home / 8,207.15-12,310.90-2,660.49

Finding the Fourth Proportional to 8,207.15, 12,310.90 and 2,660.49

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Solution

The fourth proportional to 8,207.15, 12,310.90 and 2,660.49 is: 3,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207.15 : 12,310.90 = 2,660.49 : x
  2. Step 2: Convert to fraction form
    8,207.15/12,310.90 = 2,660.49/x
  3. Step 3: Cross multiply
    8,207.15x = 12,310.90 × 2,660.49
  4. Step 4: Simplify right side
    8,207.15x = 32,752,951.48
  5. Step 5: Solve for x
    x = 32,752,951.48/8,207.15
  6. Step 6: Final answer
    x = 3,990.78

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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.