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Finding the Fourth Proportional to 3,170.76, 4,744.26 and 2,198.76

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Solution

The fourth proportional to 3,170.76, 4,744.26 and 2,198.76 is: 3,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.76 : 4,744.26 = 2,198.76 : x
  2. Step 2: Convert to fraction form
    3,170.76/4,744.26 = 2,198.76/x
  3. Step 3: Cross multiply
    3,170.76x = 4,744.26 × 2,198.76
  4. Step 4: Simplify right side
    3,170.76x = 10,431,489.12
  5. Step 5: Solve for x
    x = 10,431,489.12/3,170.76
  6. Step 6: Final answer
    x = 3,289.90

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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.