Home / 1,286.00-1,927.97-1,213.55

Finding the Fourth Proportional to 1,286.00, 1,927.97 and 1,213.55

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Solution

The fourth proportional to 1,286.00, 1,927.97 and 1,213.55 is: 1,819.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.00 : 1,927.97 = 1,213.55 : x
  2. Step 2: Convert to fraction form
    1,286.00/1,927.97 = 1,213.55/x
  3. Step 3: Cross multiply
    1,286.00x = 1,927.97 × 1,213.55
  4. Step 4: Simplify right side
    1,286.00x = 2,339,694.91
  5. Step 5: Solve for x
    x = 2,339,694.91/1,286.00
  6. Step 6: Final answer
    x = 1,819.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.