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Finding the Fourth Proportional to 2,517.82, 3,474.60 and 1,398.82

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Solution

The fourth proportional to 2,517.82, 3,474.60 and 1,398.82 is: 1,930.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.82 : 3,474.60 = 1,398.82 : x
  2. Step 2: Convert to fraction form
    2,517.82/3,474.60 = 1,398.82/x
  3. Step 3: Cross multiply
    2,517.82x = 3,474.60 × 1,398.82
  4. Step 4: Simplify right side
    2,517.82x = 4,860,339.97
  5. Step 5: Solve for x
    x = 4,860,339.97/2,517.82
  6. Step 6: Final answer
    x = 1,930.38

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1.5x scale

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.