Home / 3,861.57-5,788.92-1,395.85

Finding the Fourth Proportional to 3,861.57, 5,788.92 and 1,395.85

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Solution

The fourth proportional to 3,861.57, 5,788.92 and 1,395.85 is: 2,092.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.57 : 5,788.92 = 1,395.85 : x
  2. Step 2: Convert to fraction form
    3,861.57/5,788.92 = 1,395.85/x
  3. Step 3: Cross multiply
    3,861.57x = 5,788.92 × 1,395.85
  4. Step 4: Simplify right side
    3,861.57x = 8,080,463.98
  5. Step 5: Solve for x
    x = 8,080,463.98/3,861.57
  6. Step 6: Final answer
    x = 2,092.53

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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.