Home / 2,161.20-3,226.11-2,001

Finding the Fourth Proportional to 2,161.20, 3,226.11 and 2,001

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Solution

The fourth proportional to 2,161.20, 3,226.11 and 2,001 is: 2,986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.20 : 3,226.11 = 2,001 : x
  2. Step 2: Convert to fraction form
    2,161.20/3,226.11 = 2,001/x
  3. Step 3: Cross multiply
    2,161.20x = 3,226.11 × 2,001
  4. Step 4: Simplify right side
    2,161.20x = 6,455,446.11
  5. Step 5: Solve for x
    x = 6,455,446.11/2,161.20
  6. Step 6: Final answer
    x = 2,986.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.