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Finding the Fourth Proportional to 8,622.98, 12,940.98 and 6,912.26

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Solution

The fourth proportional to 8,622.98, 12,940.98 and 6,912.26 is: 10,373.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.98 : 12,940.98 = 6,912.26 : x
  2. Step 2: Convert to fraction form
    8,622.98/12,940.98 = 6,912.26/x
  3. Step 3: Cross multiply
    8,622.98x = 12,940.98 × 6,912.26
  4. Step 4: Simplify right side
    8,622.98x = 89,451,418.41
  5. Step 5: Solve for x
    x = 89,451,418.41/8,622.98
  6. Step 6: Final answer
    x = 10,373.61

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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.