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Finding the Fourth Proportional to 7,772.52, 11,658.84 and 2,578.44

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Solution

The fourth proportional to 7,772.52, 11,658.84 and 2,578.44 is: 3,867.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.52 : 11,658.84 = 2,578.44 : x
  2. Step 2: Convert to fraction form
    7,772.52/11,658.84 = 2,578.44/x
  3. Step 3: Cross multiply
    7,772.52x = 11,658.84 × 2,578.44
  4. Step 4: Simplify right side
    7,772.52x = 30,061,619.41
  5. Step 5: Solve for x
    x = 30,061,619.41/7,772.52
  6. Step 6: Final answer
    x = 3,867.68

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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.