Home / 11,890.62-17,833.91-3,125.61

Finding the Fourth Proportional to 11,890.62, 17,833.91 and 3,125.61

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Solution

The fourth proportional to 11,890.62, 17,833.91 and 3,125.61 is: 4,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.62 : 17,833.91 = 3,125.61 : x
  2. Step 2: Convert to fraction form
    11,890.62/17,833.91 = 3,125.61/x
  3. Step 3: Cross multiply
    11,890.62x = 17,833.91 × 3,125.61
  4. Step 4: Simplify right side
    11,890.62x = 55,741,831.81
  5. Step 5: Solve for x
    x = 55,741,831.81/11,890.62
  6. Step 6: Final answer
    x = 4,687.88

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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.