Home / 7,791.11-11,689.38-3,408.89

Finding the Fourth Proportional to 7,791.11, 11,689.38 and 3,408.89

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Solution

The fourth proportional to 7,791.11, 11,689.38 and 3,408.89 is: 5,114.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.11 : 11,689.38 = 3,408.89 : x
  2. Step 2: Convert to fraction form
    7,791.11/11,689.38 = 3,408.89/x
  3. Step 3: Cross multiply
    7,791.11x = 11,689.38 × 3,408.89
  4. Step 4: Simplify right side
    7,791.11x = 39,847,839.81
  5. Step 5: Solve for x
    x = 39,847,839.81/7,791.11
  6. Step 6: Final answer
    x = 5,114.53

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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.