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Finding the Fourth Proportional to 8,660.72, 12,992.70 and 3,467.00

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Solution

The fourth proportional to 8,660.72, 12,992.70 and 3,467.00 is: 5,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.72 : 12,992.70 = 3,467.00 : x
  2. Step 2: Convert to fraction form
    8,660.72/12,992.70 = 3,467.00/x
  3. Step 3: Cross multiply
    8,660.72x = 12,992.70 × 3,467.00
  4. Step 4: Simplify right side
    8,660.72x = 45,045,736.38
  5. Step 5: Solve for x
    x = 45,045,736.38/8,660.72
  6. Step 6: Final answer
    x = 5,201.15

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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.