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Finding the Fourth Proportional to 7,794, 11,691.39 and 2,600.28

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Solution

The fourth proportional to 7,794, 11,691.39 and 2,600.28 is: 3,900.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,794 : 11,691.39 = 2,600.28 : x
  2. Step 2: Convert to fraction form
    7,794/11,691.39 = 2,600.28/x
  3. Step 3: Cross multiply
    7,794x = 11,691.39 × 2,600.28
  4. Step 4: Simplify right side
    7,794x = 30,400,887.59
  5. Step 5: Solve for x
    x = 30,400,887.59/7,794
  6. Step 6: Final answer
    x = 3,900.55

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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.