Home / 7,936.92-11,910.78-2,742.75

Finding the Fourth Proportional to 7,936.92, 11,910.78 and 2,742.75

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Solution

The fourth proportional to 7,936.92, 11,910.78 and 2,742.75 is: 4,115.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,936.92 : 11,910.78 = 2,742.75 : x
  2. Step 2: Convert to fraction form
    7,936.92/11,910.78 = 2,742.75/x
  3. Step 3: Cross multiply
    7,936.92x = 11,910.78 × 2,742.75
  4. Step 4: Simplify right side
    7,936.92x = 32,668,291.85
  5. Step 5: Solve for x
    x = 32,668,291.85/7,936.92
  6. Step 6: Final answer
    x = 4,115.99

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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.