Home / 7,934.78-11,902.97-2,938.49

Finding the Fourth Proportional to 7,934.78, 11,902.97 and 2,938.49

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Solution

The fourth proportional to 7,934.78, 11,902.97 and 2,938.49 is: 4,408.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.78 : 11,902.97 = 2,938.49 : x
  2. Step 2: Convert to fraction form
    7,934.78/11,902.97 = 2,938.49/x
  3. Step 3: Cross multiply
    7,934.78x = 11,902.97 × 2,938.49
  4. Step 4: Simplify right side
    7,934.78x = 34,976,773.38
  5. Step 5: Solve for x
    x = 34,976,773.38/7,934.78
  6. Step 6: Final answer
    x = 4,408.03

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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.