Home / 2,517.70-3,474.05-1,398.65

Finding the Fourth Proportional to 2,517.70, 3,474.05 and 1,398.65

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Solution

The fourth proportional to 2,517.70, 3,474.05 and 1,398.65 is: 1,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.70 : 3,474.05 = 1,398.65 : x
  2. Step 2: Convert to fraction form
    2,517.70/3,474.05 = 1,398.65/x
  3. Step 3: Cross multiply
    2,517.70x = 3,474.05 × 1,398.65
  4. Step 4: Simplify right side
    2,517.70x = 4,858,966.16
  5. Step 5: Solve for x
    x = 4,858,966.16/2,517.70
  6. Step 6: Final answer
    x = 1,929.92

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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.