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Finding the Fourth Proportional to 8,495.35, 12,740.12 and 3,229.09

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Solution

The fourth proportional to 8,495.35, 12,740.12 and 3,229.09 is: 4,842.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.35 : 12,740.12 = 3,229.09 : x
  2. Step 2: Convert to fraction form
    8,495.35/12,740.12 = 3,229.09/x
  3. Step 3: Cross multiply
    8,495.35x = 12,740.12 × 3,229.09
  4. Step 4: Simplify right side
    8,495.35x = 41,138,958.20
  5. Step 5: Solve for x
    x = 41,138,958.20/8,495.35
  6. Step 6: Final answer
    x = 4,842.53

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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.