Home / 6,456.20-9,685.38-3,168.86

Finding the Fourth Proportional to 6,456.20, 9,685.38 and 3,168.86

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Solution

The fourth proportional to 6,456.20, 9,685.38 and 3,168.86 is: 4,753.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,456.20 : 9,685.38 = 3,168.86 : x
  2. Step 2: Convert to fraction form
    6,456.20/9,685.38 = 3,168.86/x
  3. Step 3: Cross multiply
    6,456.20x = 9,685.38 × 3,168.86
  4. Step 4: Simplify right side
    6,456.20x = 30,691,613.27
  5. Step 5: Solve for x
    x = 30,691,613.27/6,456.20
  6. Step 6: Final answer
    x = 4,753.82

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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.