Home / 2,161.23-2,982.52-1,229.79

Finding the Fourth Proportional to 2,161.23, 2,982.52 and 1,229.79

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Solution

The fourth proportional to 2,161.23, 2,982.52 and 1,229.79 is: 1,697.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.23 : 2,982.52 = 1,229.79 : x
  2. Step 2: Convert to fraction form
    2,161.23/2,982.52 = 1,229.79/x
  3. Step 3: Cross multiply
    2,161.23x = 2,982.52 × 1,229.79
  4. Step 4: Simplify right side
    2,161.23x = 3,667,867.12
  5. Step 5: Solve for x
    x = 3,667,867.12/2,161.23
  6. Step 6: Final answer
    x = 1,697.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.