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Finding the Fourth Proportional to 6,671.71, 9,992.94 and 5,286.61

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Solution

The fourth proportional to 6,671.71, 9,992.94 and 5,286.61 is: 7,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.71 : 9,992.94 = 5,286.61 : x
  2. Step 2: Convert to fraction form
    6,671.71/9,992.94 = 5,286.61/x
  3. Step 3: Cross multiply
    6,671.71x = 9,992.94 × 5,286.61
  4. Step 4: Simplify right side
    6,671.71x = 52,828,776.53
  5. Step 5: Solve for x
    x = 52,828,776.53/6,671.71
  6. Step 6: Final answer
    x = 7,918.33

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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.