Home / 8,110.38-12,149.81-5,328.61

Finding the Fourth Proportional to 8,110.38, 12,149.81 and 5,328.61

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Solution

The fourth proportional to 8,110.38, 12,149.81 and 5,328.61 is: 7,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,110.38 : 12,149.81 = 5,328.61 : x
  2. Step 2: Convert to fraction form
    8,110.38/12,149.81 = 5,328.61/x
  3. Step 3: Cross multiply
    8,110.38x = 12,149.81 × 5,328.61
  4. Step 4: Simplify right side
    8,110.38x = 64,741,599.06
  5. Step 5: Solve for x
    x = 64,741,599.06/8,110.38
  6. Step 6: Final answer
    x = 7,982.56

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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.