Home / 3,949.20-5,909.67-3,174.19

Finding the Fourth Proportional to 3,949.20, 5,909.67 and 3,174.19

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Solution

The fourth proportional to 3,949.20, 5,909.67 and 3,174.19 is: 4,749.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.20 : 5,909.67 = 3,174.19 : x
  2. Step 2: Convert to fraction form
    3,949.20/5,909.67 = 3,174.19/x
  3. Step 3: Cross multiply
    3,949.20x = 5,909.67 × 3,174.19
  4. Step 4: Simplify right side
    3,949.20x = 18,758,400.64
  5. Step 5: Solve for x
    x = 18,758,400.64/3,949.20
  6. Step 6: Final answer
    x = 4,749.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.