Home / 3,921.24-5,879.72-1,942.56

Finding the Fourth Proportional to 3,921.24, 5,879.72 and 1,942.56

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Solution

The fourth proportional to 3,921.24, 5,879.72 and 1,942.56 is: 2,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.24 : 5,879.72 = 1,942.56 : x
  2. Step 2: Convert to fraction form
    3,921.24/5,879.72 = 1,942.56/x
  3. Step 3: Cross multiply
    3,921.24x = 5,879.72 × 1,942.56
  4. Step 4: Simplify right side
    3,921.24x = 11,421,699.17
  5. Step 5: Solve for x
    x = 11,421,699.17/3,921.24
  6. Step 6: Final answer
    x = 2,912.78

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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.