Home / 2,086.20-3,125.22-1,391.22

Finding the Fourth Proportional to 2,086.20, 3,125.22 and 1,391.22

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Solution

The fourth proportional to 2,086.20, 3,125.22 and 1,391.22 is: 2,084.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.20 : 3,125.22 = 1,391.22 : x
  2. Step 2: Convert to fraction form
    2,086.20/3,125.22 = 1,391.22/x
  3. Step 3: Cross multiply
    2,086.20x = 3,125.22 × 1,391.22
  4. Step 4: Simplify right side
    2,086.20x = 4,347,868.57
  5. Step 5: Solve for x
    x = 4,347,868.57/2,086.20
  6. Step 6: Final answer
    x = 2,084.11

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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.