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Finding the Fourth Proportional to 3,279.12, 4,914.42 and 1,330.26

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Solution

The fourth proportional to 3,279.12, 4,914.42 and 1,330.26 is: 1,993.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.12 : 4,914.42 = 1,330.26 : x
  2. Step 2: Convert to fraction form
    3,279.12/4,914.42 = 1,330.26/x
  3. Step 3: Cross multiply
    3,279.12x = 4,914.42 × 1,330.26
  4. Step 4: Simplify right side
    3,279.12x = 6,537,456.35
  5. Step 5: Solve for x
    x = 6,537,456.35/3,279.12
  6. Step 6: Final answer
    x = 1,993.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.