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Finding the Fourth Proportional to 3,279.99, 4,919.78 and 2,185.01

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Solution

The fourth proportional to 3,279.99, 4,919.78 and 2,185.01 is: 3,277.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.99 : 4,919.78 = 2,185.01 : x
  2. Step 2: Convert to fraction form
    3,279.99/4,919.78 = 2,185.01/x
  3. Step 3: Cross multiply
    3,279.99x = 4,919.78 × 2,185.01
  4. Step 4: Simplify right side
    3,279.99x = 10,749,732.97
  5. Step 5: Solve for x
    x = 10,749,732.97/3,279.99
  6. Step 6: Final answer
    x = 3,277.37

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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.