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Finding the Fourth Proportional to 8,449.97, 11,660.94 and 4,621.61

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Solution

The fourth proportional to 8,449.97, 11,660.94 and 4,621.61 is: 6,377.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.97 : 11,660.94 = 4,621.61 : x
  2. Step 2: Convert to fraction form
    8,449.97/11,660.94 = 4,621.61/x
  3. Step 3: Cross multiply
    8,449.97x = 11,660.94 × 4,621.61
  4. Step 4: Simplify right side
    8,449.97x = 53,892,258.61
  5. Step 5: Solve for x
    x = 53,892,258.61/8,449.97
  6. Step 6: Final answer
    x = 6,377.81

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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.