Home / 1,251.43-1,867.98-1,103.65

Finding the Fourth Proportional to 1,251.43, 1,867.98 and 1,103.65

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Solution

The fourth proportional to 1,251.43, 1,867.98 and 1,103.65 is: 1,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.43 : 1,867.98 = 1,103.65 : x
  2. Step 2: Convert to fraction form
    1,251.43/1,867.98 = 1,103.65/x
  3. Step 3: Cross multiply
    1,251.43x = 1,867.98 × 1,103.65
  4. Step 4: Simplify right side
    1,251.43x = 2,061,586.79
  5. Step 5: Solve for x
    x = 2,061,586.79/1,251.43
  6. Step 6: Final answer
    x = 1,647.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.