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Finding the Fourth Proportional to 1,747.87, 2,409.82 and 1,431.97

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Solution

The fourth proportional to 1,747.87, 2,409.82 and 1,431.97 is: 1,974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.87 : 2,409.82 = 1,431.97 : x
  2. Step 2: Convert to fraction form
    1,747.87/2,409.82 = 1,431.97/x
  3. Step 3: Cross multiply
    1,747.87x = 2,409.82 × 1,431.97
  4. Step 4: Simplify right side
    1,747.87x = 3,450,789.95
  5. Step 5: Solve for x
    x = 3,450,789.95/1,747.87
  6. Step 6: Final answer
    x = 1,974.28

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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.