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Finding the Fourth Proportional to 3,987.39, 5,981.87 and 2,234.88

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Solution

The fourth proportional to 3,987.39, 5,981.87 and 2,234.88 is: 3,352.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.39 : 5,981.87 = 2,234.88 : x
  2. Step 2: Convert to fraction form
    3,987.39/5,981.87 = 2,234.88/x
  3. Step 3: Cross multiply
    3,987.39x = 5,981.87 × 2,234.88
  4. Step 4: Simplify right side
    3,987.39x = 13,368,761.63
  5. Step 5: Solve for x
    x = 13,368,761.63/3,987.39
  6. Step 6: Final answer
    x = 3,352.76

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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.