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Finding the Fourth Proportional to 3,329.98, 4,990.62 and 2,408.62

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Solution

The fourth proportional to 3,329.98, 4,990.62 and 2,408.62 is: 3,609.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.98 : 4,990.62 = 2,408.62 : x
  2. Step 2: Convert to fraction form
    3,329.98/4,990.62 = 2,408.62/x
  3. Step 3: Cross multiply
    3,329.98x = 4,990.62 × 2,408.62
  4. Step 4: Simplify right side
    3,329.98x = 12,020,507.14
  5. Step 5: Solve for x
    x = 12,020,507.14/3,329.98
  6. Step 6: Final answer
    x = 3,609.78

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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.