Home / 5,517.20-7,615.68-3,422

Finding the Fourth Proportional to 5,517.20, 7,615.68 and 3,422

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Solution

The fourth proportional to 5,517.20, 7,615.68 and 3,422 is: 4,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.20 : 7,615.68 = 3,422 : x
  2. Step 2: Convert to fraction form
    5,517.20/7,615.68 = 3,422/x
  3. Step 3: Cross multiply
    5,517.20x = 7,615.68 × 3,422
  4. Step 4: Simplify right side
    5,517.20x = 26,060,856.96
  5. Step 5: Solve for x
    x = 26,060,856.96/5,517.20
  6. Step 6: Final answer
    x = 4,723.57

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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.