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Finding the Fourth Proportional to 8,229.60, 12,441.60 and 8,229.60

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Solution

The fourth proportional to 8,229.60, 12,441.60 and 8,229.60 is: 12,441.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,229.60 : 12,441.60 = 8,229.60 : x
  2. Step 2: Convert to fraction form
    8,229.60/12,441.60 = 8,229.60/x
  3. Step 3: Cross multiply
    8,229.60x = 12,441.60 × 8,229.60
  4. Step 4: Simplify right side
    8,229.60x = 102,389,391.36
  5. Step 5: Solve for x
    x = 102,389,391.36/8,229.60
  6. Step 6: Final answer
    x = 12,441.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.