Home / 8,435.28-12,660.60-4,489.86

Finding the Fourth Proportional to 8,435.28, 12,660.60 and 4,489.86

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Solution

The fourth proportional to 8,435.28, 12,660.60 and 4,489.86 is: 6,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.28 : 12,660.60 = 4,489.86 : x
  2. Step 2: Convert to fraction form
    8,435.28/12,660.60 = 4,489.86/x
  3. Step 3: Cross multiply
    8,435.28x = 12,660.60 × 4,489.86
  4. Step 4: Simplify right side
    8,435.28x = 56,844,241.12
  5. Step 5: Solve for x
    x = 56,844,241.12/8,435.28
  6. Step 6: Final answer
    x = 6,738.87

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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.