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Finding the Fourth Proportional to 3,984.66, 5,500.38 and 2,657.88

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Solution

The fourth proportional to 3,984.66, 5,500.38 and 2,657.88 is: 3,668.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.66 : 5,500.38 = 2,657.88 : x
  2. Step 2: Convert to fraction form
    3,984.66/5,500.38 = 2,657.88/x
  3. Step 3: Cross multiply
    3,984.66x = 5,500.38 × 2,657.88
  4. Step 4: Simplify right side
    3,984.66x = 14,619,349.99
  5. Step 5: Solve for x
    x = 14,619,349.99/3,984.66
  6. Step 6: Final answer
    x = 3,668.91

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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.