Home / 3,942.96-5,440.76-2,174.64

Finding the Fourth Proportional to 3,942.96, 5,440.76 and 2,174.64

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Solution

The fourth proportional to 3,942.96, 5,440.76 and 2,174.64 is: 3,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.96 : 5,440.76 = 2,174.64 : x
  2. Step 2: Convert to fraction form
    3,942.96/5,440.76 = 2,174.64/x
  3. Step 3: Cross multiply
    3,942.96x = 5,440.76 × 2,174.64
  4. Step 4: Simplify right side
    3,942.96x = 11,831,694.33
  5. Step 5: Solve for x
    x = 11,831,694.33/3,942.96
  6. Step 6: Final answer
    x = 3,000.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.