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Finding the Fourth Proportional to 8,447.54, 12,670.17 and 2,207.99

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Solution

The fourth proportional to 8,447.54, 12,670.17 and 2,207.99 is: 3,311.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.54 : 12,670.17 = 2,207.99 : x
  2. Step 2: Convert to fraction form
    8,447.54/12,670.17 = 2,207.99/x
  3. Step 3: Cross multiply
    8,447.54x = 12,670.17 × 2,207.99
  4. Step 4: Simplify right side
    8,447.54x = 27,975,608.66
  5. Step 5: Solve for x
    x = 27,975,608.66/8,447.54
  6. Step 6: Final answer
    x = 3,311.69

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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.