Home / 3,942.28-5,912.70-1,601.72

Finding the Fourth Proportional to 3,942.28, 5,912.70 and 1,601.72

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Solution

The fourth proportional to 3,942.28, 5,912.70 and 1,601.72 is: 2,402.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.28 : 5,912.70 = 1,601.72 : x
  2. Step 2: Convert to fraction form
    3,942.28/5,912.70 = 1,601.72/x
  3. Step 3: Cross multiply
    3,942.28x = 5,912.70 × 1,601.72
  4. Step 4: Simplify right side
    3,942.28x = 9,470,489.84
  5. Step 5: Solve for x
    x = 9,470,489.84/3,942.28
  6. Step 6: Final answer
    x = 2,402.29

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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.