Home / 8,112.64-12,169.28-2,269.76

Finding the Fourth Proportional to 8,112.64, 12,169.28 and 2,269.76

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Solution

The fourth proportional to 8,112.64, 12,169.28 and 2,269.76 is: 3,404.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.64 : 12,169.28 = 2,269.76 : x
  2. Step 2: Convert to fraction form
    8,112.64/12,169.28 = 2,269.76/x
  3. Step 3: Cross multiply
    8,112.64x = 12,169.28 × 2,269.76
  4. Step 4: Simplify right side
    8,112.64x = 27,621,344.97
  5. Step 5: Solve for x
    x = 27,621,344.97/8,112.64
  6. Step 6: Final answer
    x = 3,404.73

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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.