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Finding the Fourth Proportional to 8,511.27, 12,794.24 and 7,902.55

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Solution

The fourth proportional to 8,511.27, 12,794.24 and 7,902.55 is: 11,879.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.27 : 12,794.24 = 7,902.55 : x
  2. Step 2: Convert to fraction form
    8,511.27/12,794.24 = 7,902.55/x
  3. Step 3: Cross multiply
    8,511.27x = 12,794.24 × 7,902.55
  4. Step 4: Simplify right side
    8,511.27x = 101,107,121.31
  5. Step 5: Solve for x
    x = 101,107,121.31/8,511.27
  6. Step 6: Final answer
    x = 11,879.21

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1.5x scale

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.