Home / 2,517.78-3,474.46-1,398.70

Finding the Fourth Proportional to 2,517.78, 3,474.46 and 1,398.70

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Solution

The fourth proportional to 2,517.78, 3,474.46 and 1,398.70 is: 1,930.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.78 : 3,474.46 = 1,398.70 : x
  2. Step 2: Convert to fraction form
    2,517.78/3,474.46 = 1,398.70/x
  3. Step 3: Cross multiply
    2,517.78x = 3,474.46 × 1,398.70
  4. Step 4: Simplify right side
    2,517.78x = 4,859,733.29
  5. Step 5: Solve for x
    x = 4,859,733.29/2,517.78
  6. Step 6: Final answer
    x = 1,930.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.