Home / 2,081.64-3,125.58-1,306.56

Finding the Fourth Proportional to 2,081.64, 3,125.58 and 1,306.56

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Solution

The fourth proportional to 2,081.64, 3,125.58 and 1,306.56 is: 1,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.64 : 3,125.58 = 1,306.56 : x
  2. Step 2: Convert to fraction form
    2,081.64/3,125.58 = 1,306.56/x
  3. Step 3: Cross multiply
    2,081.64x = 3,125.58 × 1,306.56
  4. Step 4: Simplify right side
    2,081.64x = 4,083,757.80
  5. Step 5: Solve for x
    x = 4,083,757.80/2,081.64
  6. Step 6: Final answer
    x = 1,961.80

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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.