Home / 8,399.60-12,591.40-3,133.20

Finding the Fourth Proportional to 8,399.60, 12,591.40 and 3,133.20

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Solution

The fourth proportional to 8,399.60, 12,591.40 and 3,133.20 is: 4,696.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.60 : 12,591.40 = 3,133.20 : x
  2. Step 2: Convert to fraction form
    8,399.60/12,591.40 = 3,133.20/x
  3. Step 3: Cross multiply
    8,399.60x = 12,591.40 × 3,133.20
  4. Step 4: Simplify right side
    8,399.60x = 39,451,374.48
  5. Step 5: Solve for x
    x = 39,451,374.48/8,399.60
  6. Step 6: Final answer
    x = 4,696.82

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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.