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Finding the Fourth Proportional to 8,605.49, 12,906.99 and 2,761.34

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Solution

The fourth proportional to 8,605.49, 12,906.99 and 2,761.34 is: 4,141.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.49 : 12,906.99 = 2,761.34 : x
  2. Step 2: Convert to fraction form
    8,605.49/12,906.99 = 2,761.34/x
  3. Step 3: Cross multiply
    8,605.49x = 12,906.99 × 2,761.34
  4. Step 4: Simplify right side
    8,605.49x = 35,640,523.23
  5. Step 5: Solve for x
    x = 35,640,523.23/8,605.49
  6. Step 6: Final answer
    x = 4,141.61

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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.