Home / 8,125.60-12,188.85-2,281.75

Finding the Fourth Proportional to 8,125.60, 12,188.85 and 2,281.75

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Solution

The fourth proportional to 8,125.60, 12,188.85 and 2,281.75 is: 3,422.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.60 : 12,188.85 = 2,281.75 : x
  2. Step 2: Convert to fraction form
    8,125.60/12,188.85 = 2,281.75/x
  3. Step 3: Cross multiply
    8,125.60x = 12,188.85 × 2,281.75
  4. Step 4: Simplify right side
    8,125.60x = 27,811,908.49
  5. Step 5: Solve for x
    x = 27,811,908.49/8,125.60
  6. Step 6: Final answer
    x = 3,422.75

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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.