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Finding the Fourth Proportional to 3,321.83, 4,985.82 and 1,679.54

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Solution

The fourth proportional to 3,321.83, 4,985.82 and 1,679.54 is: 2,520.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.83 : 4,985.82 = 1,679.54 : x
  2. Step 2: Convert to fraction form
    3,321.83/4,985.82 = 1,679.54/x
  3. Step 3: Cross multiply
    3,321.83x = 4,985.82 × 1,679.54
  4. Step 4: Simplify right side
    3,321.83x = 8,373,859.19
  5. Step 5: Solve for x
    x = 8,373,859.19/3,321.83
  6. Step 6: Final answer
    x = 2,520.86

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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.