Home / 8,081.91-12,121.52-2,239.11

Finding the Fourth Proportional to 8,081.91, 12,121.52 and 2,239.11

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Solution

The fourth proportional to 8,081.91, 12,121.52 and 2,239.11 is: 3,358.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.91 : 12,121.52 = 2,239.11 : x
  2. Step 2: Convert to fraction form
    8,081.91/12,121.52 = 2,239.11/x
  3. Step 3: Cross multiply
    8,081.91x = 12,121.52 × 2,239.11
  4. Step 4: Simplify right side
    8,081.91x = 27,141,405.45
  5. Step 5: Solve for x
    x = 27,141,405.45/8,081.91
  6. Step 6: Final answer
    x = 3,358.29

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1.5x scale

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.