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Finding the Fourth Proportional to 3,327.60, 4,992.80 and 1,786.80

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Solution

The fourth proportional to 3,327.60, 4,992.80 and 1,786.80 is: 2,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,327.60 : 4,992.80 = 1,786.80 : x
  2. Step 2: Convert to fraction form
    3,327.60/4,992.80 = 1,786.80/x
  3. Step 3: Cross multiply
    3,327.60x = 4,992.80 × 1,786.80
  4. Step 4: Simplify right side
    3,327.60x = 8,921,135.04
  5. Step 5: Solve for x
    x = 8,921,135.04/3,327.60
  6. Step 6: Final answer
    x = 2,680.95

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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.