Home / 2,639.16-3,956.46-1,251.78

Finding the Fourth Proportional to 2,639.16, 3,956.46 and 1,251.78

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Solution

The fourth proportional to 2,639.16, 3,956.46 and 1,251.78 is: 1,876.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.16 : 3,956.46 = 1,251.78 : x
  2. Step 2: Convert to fraction form
    2,639.16/3,956.46 = 1,251.78/x
  3. Step 3: Cross multiply
    2,639.16x = 3,956.46 × 1,251.78
  4. Step 4: Simplify right side
    2,639.16x = 4,952,617.50
  5. Step 5: Solve for x
    x = 4,952,617.50/2,639.16
  6. Step 6: Final answer
    x = 1,876.59

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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.