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Finding the Fourth Proportional to 3,987.32, 5,984.60 and 2,040.88

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Solution

The fourth proportional to 3,987.32, 5,984.60 and 2,040.88 is: 3,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.32 : 5,984.60 = 2,040.88 : x
  2. Step 2: Convert to fraction form
    3,987.32/5,984.60 = 2,040.88/x
  3. Step 3: Cross multiply
    3,987.32x = 5,984.60 × 2,040.88
  4. Step 4: Simplify right side
    3,987.32x = 12,213,850.45
  5. Step 5: Solve for x
    x = 12,213,850.45/3,987.32
  6. Step 6: Final answer
    x = 3,063.17

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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.