Home / 7,934.10-11,867.13-7,721.88

Finding the Fourth Proportional to 7,934.10, 11,867.13 and 7,721.88

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Solution

The fourth proportional to 7,934.10, 11,867.13 and 7,721.88 is: 11,549.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.10 : 11,867.13 = 7,721.88 : x
  2. Step 2: Convert to fraction form
    7,934.10/11,867.13 = 7,721.88/x
  3. Step 3: Cross multiply
    7,934.10x = 11,867.13 × 7,721.88
  4. Step 4: Simplify right side
    7,934.10x = 91,636,553.80
  5. Step 5: Solve for x
    x = 91,636,553.80/7,934.10
  6. Step 6: Final answer
    x = 11,549.71

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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.