Home / 1,947.39-2,687.97-1,358.11

Finding the Fourth Proportional to 1,947.39, 2,687.97 and 1,358.11

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Solution

The fourth proportional to 1,947.39, 2,687.97 and 1,358.11 is: 1,874.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.39 : 2,687.97 = 1,358.11 : x
  2. Step 2: Convert to fraction form
    1,947.39/2,687.97 = 1,358.11/x
  3. Step 3: Cross multiply
    1,947.39x = 2,687.97 × 1,358.11
  4. Step 4: Simplify right side
    1,947.39x = 3,650,559.75
  5. Step 5: Solve for x
    x = 3,650,559.75/1,947.39
  6. Step 6: Final answer
    x = 1,874.59

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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.