Home / 2,161.13-2,982.38-1,229.63

Finding the Fourth Proportional to 2,161.13, 2,982.38 and 1,229.63

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Solution

The fourth proportional to 2,161.13, 2,982.38 and 1,229.63 is: 1,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.13 : 2,982.38 = 1,229.63 : x
  2. Step 2: Convert to fraction form
    2,161.13/2,982.38 = 1,229.63/x
  3. Step 3: Cross multiply
    2,161.13x = 2,982.38 × 1,229.63
  4. Step 4: Simplify right side
    2,161.13x = 3,667,202.86
  5. Step 5: Solve for x
    x = 3,667,202.86/2,161.13
  6. Step 6: Final answer
    x = 1,696.90

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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.