Home / 3,942.46-5,440.68-2,174.14

Finding the Fourth Proportional to 3,942.46, 5,440.68 and 2,174.14

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Solution

The fourth proportional to 3,942.46, 5,440.68 and 2,174.14 is: 3,000.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.46 : 5,440.68 = 2,174.14 : x
  2. Step 2: Convert to fraction form
    3,942.46/5,440.68 = 2,174.14/x
  3. Step 3: Cross multiply
    3,942.46x = 5,440.68 × 2,174.14
  4. Step 4: Simplify right side
    3,942.46x = 11,828,800.02
  5. Step 5: Solve for x
    x = 11,828,800.02/3,942.46
  6. Step 6: Final answer
    x = 3,000.36

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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.