Home / 3,321.11-4,969.15-1,981.96

Finding the Fourth Proportional to 3,321.11, 4,969.15 and 1,981.96

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Solution

The fourth proportional to 3,321.11, 4,969.15 and 1,981.96 is: 2,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.11 : 4,969.15 = 1,981.96 : x
  2. Step 2: Convert to fraction form
    3,321.11/4,969.15 = 1,981.96/x
  3. Step 3: Cross multiply
    3,321.11x = 4,969.15 × 1,981.96
  4. Step 4: Simplify right side
    3,321.11x = 9,848,656.53
  5. Step 5: Solve for x
    x = 9,848,656.53/3,321.11
  6. Step 6: Final answer
    x = 2,965.47

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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.