Home / 3,942.45-5,912.14-1,721.97

Finding the Fourth Proportional to 3,942.45, 5,912.14 and 1,721.97

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Solution

The fourth proportional to 3,942.45, 5,912.14 and 1,721.97 is: 2,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.45 : 5,912.14 = 1,721.97 : x
  2. Step 2: Convert to fraction form
    3,942.45/5,912.14 = 1,721.97/x
  3. Step 3: Cross multiply
    3,942.45x = 5,912.14 × 1,721.97
  4. Step 4: Simplify right side
    3,942.45x = 10,180,527.72
  5. Step 5: Solve for x
    x = 10,180,527.72/3,942.45
  6. Step 6: Final answer
    x = 2,582.28

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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.