Home / 5,325-7,989.42-3,861.60

Finding the Fourth Proportional to 5,325, 7,989.42 and 3,861.60

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Solution

The fourth proportional to 5,325, 7,989.42 and 3,861.60 is: 5,793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,325 : 7,989.42 = 3,861.60 : x
  2. Step 2: Convert to fraction form
    5,325/7,989.42 = 3,861.60/x
  3. Step 3: Cross multiply
    5,325x = 7,989.42 × 3,861.60
  4. Step 4: Simplify right side
    5,325x = 30,851,944.27
  5. Step 5: Solve for x
    x = 30,851,944.27/5,325
  6. Step 6: Final answer
    x = 5,793.79

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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.