Home / 3,942.70-5,440.99-2,174.28

Finding the Fourth Proportional to 3,942.70, 5,440.99 and 2,174.28

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Solution

The fourth proportional to 3,942.70, 5,440.99 and 2,174.28 is: 3,000.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.70 : 5,440.99 = 2,174.28 : x
  2. Step 2: Convert to fraction form
    3,942.70/5,440.99 = 2,174.28/x
  3. Step 3: Cross multiply
    3,942.70x = 5,440.99 × 2,174.28
  4. Step 4: Simplify right side
    3,942.70x = 11,830,235.74
  5. Step 5: Solve for x
    x = 11,830,235.74/3,942.70
  6. Step 6: Final answer
    x = 3,000.54

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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.