Home / 2,718.46-4,078.20-1,257.61

Finding the Fourth Proportional to 2,718.46, 4,078.20 and 1,257.61

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Solution

The fourth proportional to 2,718.46, 4,078.20 and 1,257.61 is: 1,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.46 : 4,078.20 = 1,257.61 : x
  2. Step 2: Convert to fraction form
    2,718.46/4,078.20 = 1,257.61/x
  3. Step 3: Cross multiply
    2,718.46x = 4,078.20 × 1,257.61
  4. Step 4: Simplify right side
    2,718.46x = 5,128,780.20
  5. Step 5: Solve for x
    x = 5,128,780.20/2,718.46
  6. Step 6: Final answer
    x = 1,886.65

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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.