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Finding the Fourth Proportional to 8,607.97, 12,912.41 and 2,764.13

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Solution

The fourth proportional to 8,607.97, 12,912.41 and 2,764.13 is: 4,146.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.97 : 12,912.41 = 2,764.13 : x
  2. Step 2: Convert to fraction form
    8,607.97/12,912.41 = 2,764.13/x
  3. Step 3: Cross multiply
    8,607.97x = 12,912.41 × 2,764.13
  4. Step 4: Simplify right side
    8,607.97x = 35,691,522.20
  5. Step 5: Solve for x
    x = 35,691,522.20/8,607.97
  6. Step 6: Final answer
    x = 4,146.33

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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.