Home / 2,682.45-4,022.34-1,121.97

Finding the Fourth Proportional to 2,682.45, 4,022.34 and 1,121.97

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Solution

The fourth proportional to 2,682.45, 4,022.34 and 1,121.97 is: 1,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.45 : 4,022.34 = 1,121.97 : x
  2. Step 2: Convert to fraction form
    2,682.45/4,022.34 = 1,121.97/x
  3. Step 3: Cross multiply
    2,682.45x = 4,022.34 × 1,121.97
  4. Step 4: Simplify right side
    2,682.45x = 4,512,944.81
  5. Step 5: Solve for x
    x = 4,512,944.81/2,682.45
  6. Step 6: Final answer
    x = 1,682.40

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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.