Home / 8,731.68-12,046.38-5,589.66

Finding the Fourth Proportional to 8,731.68, 12,046.38 and 5,589.66

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Solution

The fourth proportional to 8,731.68, 12,046.38 and 5,589.66 is: 7,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.68 : 12,046.38 = 5,589.66 : x
  2. Step 2: Convert to fraction form
    8,731.68/12,046.38 = 5,589.66/x
  3. Step 3: Cross multiply
    8,731.68x = 12,046.38 × 5,589.66
  4. Step 4: Simplify right side
    8,731.68x = 67,335,168.43
  5. Step 5: Solve for x
    x = 67,335,168.43/8,731.68
  6. Step 6: Final answer
    x = 7,711.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.