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Finding the Fourth Proportional to 8,861.08, 13,270 and 8,627.80

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Solution

The fourth proportional to 8,861.08, 13,270 and 8,627.80 is: 12,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.08 : 13,270 = 8,627.80 : x
  2. Step 2: Convert to fraction form
    8,861.08/13,270 = 8,627.80/x
  3. Step 3: Cross multiply
    8,861.08x = 13,270 × 8,627.80
  4. Step 4: Simplify right side
    8,861.08x = 114,490,906.00
  5. Step 5: Solve for x
    x = 114,490,906.00/8,861.08
  6. Step 6: Final answer
    x = 12,920.65

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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.