Home / 3,942.92-5,440.98-2,174.22

Finding the Fourth Proportional to 3,942.92, 5,440.98 and 2,174.22

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Solution

The fourth proportional to 3,942.92, 5,440.98 and 2,174.22 is: 3,000.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.92 : 5,440.98 = 2,174.22 : x
  2. Step 2: Convert to fraction form
    3,942.92/5,440.98 = 2,174.22/x
  3. Step 3: Cross multiply
    3,942.92x = 5,440.98 × 2,174.22
  4. Step 4: Simplify right side
    3,942.92x = 11,829,887.54
  5. Step 5: Solve for x
    x = 11,829,887.54/3,942.92
  6. Step 6: Final answer
    x = 3,000.29

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1.5x scale

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.