Home / 3,805.10-5,251.09-2,126.61

Finding the Fourth Proportional to 3,805.10, 5,251.09 and 2,126.61

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Solution

The fourth proportional to 3,805.10, 5,251.09 and 2,126.61 is: 2,934.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.10 : 5,251.09 = 2,126.61 : x
  2. Step 2: Convert to fraction form
    3,805.10/5,251.09 = 2,126.61/x
  3. Step 3: Cross multiply
    3,805.10x = 5,251.09 × 2,126.61
  4. Step 4: Simplify right side
    3,805.10x = 11,167,020.50
  5. Step 5: Solve for x
    x = 11,167,020.50/3,805.10
  6. Step 6: Final answer
    x = 2,934.75

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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.