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Finding the Fourth Proportional to 8,755.39, 13,138.08 and 3,208

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Solution

The fourth proportional to 8,755.39, 13,138.08 and 3,208 is: 4,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.39 : 13,138.08 = 3,208 : x
  2. Step 2: Convert to fraction form
    8,755.39/13,138.08 = 3,208/x
  3. Step 3: Cross multiply
    8,755.39x = 13,138.08 × 3,208
  4. Step 4: Simplify right side
    8,755.39x = 42,146,960.64
  5. Step 5: Solve for x
    x = 42,146,960.64/8,755.39
  6. Step 6: Final answer
    x = 4,813.83

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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.