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Finding the Fourth Proportional to 2,629.94, 3,944.97 and 682.07

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Solution

The fourth proportional to 2,629.94, 3,944.97 and 682.07 is: 1,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.94 : 3,944.97 = 682.07 : x
  2. Step 2: Convert to fraction form
    2,629.94/3,944.97 = 682.07/x
  3. Step 3: Cross multiply
    2,629.94x = 3,944.97 × 682.07
  4. Step 4: Simplify right side
    2,629.94x = 2,690,725.96
  5. Step 5: Solve for x
    x = 2,690,725.96/2,629.94
  6. Step 6: Final answer
    x = 1,023.12

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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.