Home / 7,891.20-11,828.35-3,934.66

Finding the Fourth Proportional to 7,891.20, 11,828.35 and 3,934.66

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Solution

The fourth proportional to 7,891.20, 11,828.35 and 3,934.66 is: 5,897.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.20 : 11,828.35 = 3,934.66 : x
  2. Step 2: Convert to fraction form
    7,891.20/11,828.35 = 3,934.66/x
  3. Step 3: Cross multiply
    7,891.20x = 11,828.35 × 3,934.66
  4. Step 4: Simplify right side
    7,891.20x = 46,540,535.61
  5. Step 5: Solve for x
    x = 46,540,535.61/7,891.20
  6. Step 6: Final answer
    x = 5,897.78

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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.