Home / 8,431.20-12,646.80-2,882.70

Finding the Fourth Proportional to 8,431.20, 12,646.80 and 2,882.70

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Solution

The fourth proportional to 8,431.20, 12,646.80 and 2,882.70 is: 4,324.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.20 : 12,646.80 = 2,882.70 : x
  2. Step 2: Convert to fraction form
    8,431.20/12,646.80 = 2,882.70/x
  3. Step 3: Cross multiply
    8,431.20x = 12,646.80 × 2,882.70
  4. Step 4: Simplify right side
    8,431.20x = 36,456,930.36
  5. Step 5: Solve for x
    x = 36,456,930.36/8,431.20
  6. Step 6: Final answer
    x = 4,324.05

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Similar ratio
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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.