Home / 7,955.38-11,921.72-3,791.98

Finding the Fourth Proportional to 7,955.38, 11,921.72 and 3,791.98

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Solution

The fourth proportional to 7,955.38, 11,921.72 and 3,791.98 is: 5,682.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.38 : 11,921.72 = 3,791.98 : x
  2. Step 2: Convert to fraction form
    7,955.38/11,921.72 = 3,791.98/x
  3. Step 3: Cross multiply
    7,955.38x = 11,921.72 × 3,791.98
  4. Step 4: Simplify right side
    7,955.38x = 45,206,864.20
  5. Step 5: Solve for x
    x = 45,206,864.20/7,955.38
  6. Step 6: Final answer
    x = 5,682.56

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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.