Home / 3,942.55-5,440.71-2,174.11

Finding the Fourth Proportional to 3,942.55, 5,440.71 and 2,174.11

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Solution

The fourth proportional to 3,942.55, 5,440.71 and 2,174.11 is: 3,000.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.55 : 5,440.71 = 2,174.11 : x
  2. Step 2: Convert to fraction form
    3,942.55/5,440.71 = 2,174.11/x
  3. Step 3: Cross multiply
    3,942.55x = 5,440.71 × 2,174.11
  4. Step 4: Simplify right side
    3,942.55x = 11,828,702.02
  5. Step 5: Solve for x
    x = 11,828,702.02/3,942.55
  6. Step 6: Final answer
    x = 3,000.27

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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.