Home / 7,961.38-11,942.05-2,117.99

Finding the Fourth Proportional to 7,961.38, 11,942.05 and 2,117.99

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Solution

The fourth proportional to 7,961.38, 11,942.05 and 2,117.99 is: 3,176.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.38 : 11,942.05 = 2,117.99 : x
  2. Step 2: Convert to fraction form
    7,961.38/11,942.05 = 2,117.99/x
  3. Step 3: Cross multiply
    7,961.38x = 11,942.05 × 2,117.99
  4. Step 4: Simplify right side
    7,961.38x = 25,293,112.62
  5. Step 5: Solve for x
    x = 25,293,112.62/7,961.38
  6. Step 6: Final answer
    x = 3,176.98

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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.