Home / 2,132.39-3,198.59-671.69

Finding the Fourth Proportional to 2,132.39, 3,198.59 and 671.69

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Solution

The fourth proportional to 2,132.39, 3,198.59 and 671.69 is: 1,007.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.39 : 3,198.59 = 671.69 : x
  2. Step 2: Convert to fraction form
    2,132.39/3,198.59 = 671.69/x
  3. Step 3: Cross multiply
    2,132.39x = 3,198.59 × 671.69
  4. Step 4: Simplify right side
    2,132.39x = 2,148,460.92
  5. Step 5: Solve for x
    x = 2,148,460.92/2,132.39
  6. Step 6: Final answer
    x = 1,007.54

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1.5x scale

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.