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Finding the Fourth Proportional to 3,322.98, 4,979.30 and 1,242.42

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Solution

The fourth proportional to 3,322.98, 4,979.30 and 1,242.42 is: 1,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.98 : 4,979.30 = 1,242.42 : x
  2. Step 2: Convert to fraction form
    3,322.98/4,979.30 = 1,242.42/x
  3. Step 3: Cross multiply
    3,322.98x = 4,979.30 × 1,242.42
  4. Step 4: Simplify right side
    3,322.98x = 6,186,375.69
  5. Step 5: Solve for x
    x = 6,186,375.69/3,322.98
  6. Step 6: Final answer
    x = 1,861.70

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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.