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Finding the Fourth Proportional to 8,800, 12,149.52 and 5,661.64

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Solution

The fourth proportional to 8,800, 12,149.52 and 5,661.64 is: 7,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,800 : 12,149.52 = 5,661.64 : x
  2. Step 2: Convert to fraction form
    8,800/12,149.52 = 5,661.64/x
  3. Step 3: Cross multiply
    8,800x = 12,149.52 × 5,661.64
  4. Step 4: Simplify right side
    8,800x = 68,786,208.41
  5. Step 5: Solve for x
    x = 68,786,208.41/8,800
  6. Step 6: Final answer
    x = 7,816.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.