Home / 3,942.27-5,912.64-1,309.36

Finding the Fourth Proportional to 3,942.27, 5,912.64 and 1,309.36

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Solution

The fourth proportional to 3,942.27, 5,912.64 and 1,309.36 is: 1,963.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.27 : 5,912.64 = 1,309.36 : x
  2. Step 2: Convert to fraction form
    3,942.27/5,912.64 = 1,309.36/x
  3. Step 3: Cross multiply
    3,942.27x = 5,912.64 × 1,309.36
  4. Step 4: Simplify right side
    3,942.27x = 7,741,767.76
  5. Step 5: Solve for x
    x = 7,741,767.76/3,942.27
  6. Step 6: Final answer
    x = 1,963.79

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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.