Home / 3,861.20-5,789.82-1,263.80

Finding the Fourth Proportional to 3,861.20, 5,789.82 and 1,263.80

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Solution

The fourth proportional to 3,861.20, 5,789.82 and 1,263.80 is: 1,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.20 : 5,789.82 = 1,263.80 : x
  2. Step 2: Convert to fraction form
    3,861.20/5,789.82 = 1,263.80/x
  3. Step 3: Cross multiply
    3,861.20x = 5,789.82 × 1,263.80
  4. Step 4: Simplify right side
    3,861.20x = 7,317,174.52
  5. Step 5: Solve for x
    x = 7,317,174.52/3,861.20
  6. Step 6: Final answer
    x = 1,895.05

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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.