Home / 8,161.14-12,240.33-3,162.78

Finding the Fourth Proportional to 8,161.14, 12,240.33 and 3,162.78

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Solution

The fourth proportional to 8,161.14, 12,240.33 and 3,162.78 is: 4,743.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.14 : 12,240.33 = 3,162.78 : x
  2. Step 2: Convert to fraction form
    8,161.14/12,240.33 = 3,162.78/x
  3. Step 3: Cross multiply
    8,161.14x = 12,240.33 × 3,162.78
  4. Step 4: Simplify right side
    8,161.14x = 38,713,470.92
  5. Step 5: Solve for x
    x = 38,713,470.92/8,161.14
  6. Step 6: Final answer
    x = 4,743.64

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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.