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Finding the Fourth Proportional to 3,299.98, 4,951.29 and 1,986.22

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Solution

The fourth proportional to 3,299.98, 4,951.29 and 1,986.22 is: 2,980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,299.98 : 4,951.29 = 1,986.22 : x
  2. Step 2: Convert to fraction form
    3,299.98/4,951.29 = 1,986.22/x
  3. Step 3: Cross multiply
    3,299.98x = 4,951.29 × 1,986.22
  4. Step 4: Simplify right side
    3,299.98x = 9,834,351.22
  5. Step 5: Solve for x
    x = 9,834,351.22/3,299.98
  6. Step 6: Final answer
    x = 2,980.12

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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.