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Finding the Fourth Proportional to 7,987.44, 11,981.16 and 2,793.30

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Solution

The fourth proportional to 7,987.44, 11,981.16 and 2,793.30 is: 4,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.44 : 11,981.16 = 2,793.30 : x
  2. Step 2: Convert to fraction form
    7,987.44/11,981.16 = 2,793.30/x
  3. Step 3: Cross multiply
    7,987.44x = 11,981.16 × 2,793.30
  4. Step 4: Simplify right side
    7,987.44x = 33,466,974.23
  5. Step 5: Solve for x
    x = 33,466,974.23/7,987.44
  6. Step 6: Final answer
    x = 4,189.95

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Similar ratio
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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.