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Finding the Fourth Proportional to 5,580.42, 8,361.42 and 3,928.92

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Solution

The fourth proportional to 5,580.42, 8,361.42 and 3,928.92 is: 5,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,580.42 : 8,361.42 = 3,928.92 : x
  2. Step 2: Convert to fraction form
    5,580.42/8,361.42 = 3,928.92/x
  3. Step 3: Cross multiply
    5,580.42x = 8,361.42 × 3,928.92
  4. Step 4: Simplify right side
    5,580.42x = 32,851,350.27
  5. Step 5: Solve for x
    x = 32,851,350.27/5,580.42
  6. Step 6: Final answer
    x = 5,886.90

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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.