Home / 3,942.60-5,440.71-2,174.25

Finding the Fourth Proportional to 3,942.60, 5,440.71 and 2,174.25

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Solution

The fourth proportional to 3,942.60, 5,440.71 and 2,174.25 is: 3,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.60 : 5,440.71 = 2,174.25 : x
  2. Step 2: Convert to fraction form
    3,942.60/5,440.71 = 2,174.25/x
  3. Step 3: Cross multiply
    3,942.60x = 5,440.71 × 2,174.25
  4. Step 4: Simplify right side
    3,942.60x = 11,829,463.72
  5. Step 5: Solve for x
    x = 11,829,463.72/3,942.60
  6. Step 6: Final answer
    x = 3,000.42

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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.