Home / 5,540.38-8,311.02-3,987.61

Finding the Fourth Proportional to 5,540.38, 8,311.02 and 3,987.61

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Solution

The fourth proportional to 5,540.38, 8,311.02 and 3,987.61 is: 5,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.38 : 8,311.02 = 3,987.61 : x
  2. Step 2: Convert to fraction form
    5,540.38/8,311.02 = 3,987.61/x
  3. Step 3: Cross multiply
    5,540.38x = 8,311.02 × 3,987.61
  4. Step 4: Simplify right side
    5,540.38x = 33,141,064.91
  5. Step 5: Solve for x
    x = 33,141,064.91/5,540.38
  6. Step 6: Final answer
    x = 5,981.74

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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.