Home / 7,836.78-11,755.16-2,575.47

Finding the Fourth Proportional to 7,836.78, 11,755.16 and 2,575.47

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Solution

The fourth proportional to 7,836.78, 11,755.16 and 2,575.47 is: 3,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836.78 : 11,755.16 = 2,575.47 : x
  2. Step 2: Convert to fraction form
    7,836.78/11,755.16 = 2,575.47/x
  3. Step 3: Cross multiply
    7,836.78x = 11,755.16 × 2,575.47
  4. Step 4: Simplify right side
    7,836.78x = 30,275,049.05
  5. Step 5: Solve for x
    x = 30,275,049.05/7,836.78
  6. Step 6: Final answer
    x = 3,863.20

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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.