Home / 2,132.60-3,198.89-671.56

Finding the Fourth Proportional to 2,132.60, 3,198.89 and 671.56

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Solution

The fourth proportional to 2,132.60, 3,198.89 and 671.56 is: 1,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.60 : 3,198.89 = 671.56 : x
  2. Step 2: Convert to fraction form
    2,132.60/3,198.89 = 671.56/x
  3. Step 3: Cross multiply
    2,132.60x = 3,198.89 × 671.56
  4. Step 4: Simplify right side
    2,132.60x = 2,148,240.25
  5. Step 5: Solve for x
    x = 2,148,240.25/2,132.60
  6. Step 6: Final answer
    x = 1,007.34

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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.