Home / 2,161.26-2,982.69-1,229.76

Finding the Fourth Proportional to 2,161.26, 2,982.69 and 1,229.76

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Solution

The fourth proportional to 2,161.26, 2,982.69 and 1,229.76 is: 1,697.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.26 : 2,982.69 = 1,229.76 : x
  2. Step 2: Convert to fraction form
    2,161.26/2,982.69 = 1,229.76/x
  3. Step 3: Cross multiply
    2,161.26x = 2,982.69 × 1,229.76
  4. Step 4: Simplify right side
    2,161.26x = 3,667,992.85
  5. Step 5: Solve for x
    x = 3,667,992.85/2,161.26
  6. Step 6: Final answer
    x = 1,697.15

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1.5x scale

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.