Home / 3,861.21-5,791.28-1,519.55

Finding the Fourth Proportional to 3,861.21, 5,791.28 and 1,519.55

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Solution

The fourth proportional to 3,861.21, 5,791.28 and 1,519.55 is: 2,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.21 : 5,791.28 = 1,519.55 : x
  2. Step 2: Convert to fraction form
    3,861.21/5,791.28 = 1,519.55/x
  3. Step 3: Cross multiply
    3,861.21x = 5,791.28 × 1,519.55
  4. Step 4: Simplify right side
    3,861.21x = 8,800,102.97
  5. Step 5: Solve for x
    x = 8,800,102.97/3,861.21
  6. Step 6: Final answer
    x = 2,279.10

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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.