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Finding the Fourth Proportional to 8,609.04, 11,961.90 and 8,517.60

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Solution

The fourth proportional to 8,609.04, 11,961.90 and 8,517.60 is: 11,834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.04 : 11,961.90 = 8,517.60 : x
  2. Step 2: Convert to fraction form
    8,609.04/11,961.90 = 8,517.60/x
  3. Step 3: Cross multiply
    8,609.04x = 11,961.90 × 8,517.60
  4. Step 4: Simplify right side
    8,609.04x = 101,886,679.44
  5. Step 5: Solve for x
    x = 101,886,679.44/8,609.04
  6. Step 6: Final answer
    x = 11,834.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.