Home / 2,132.10-3,198.32-745.39

Finding the Fourth Proportional to 2,132.10, 3,198.32 and 745.39

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Solution

The fourth proportional to 2,132.10, 3,198.32 and 745.39 is: 1,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.10 : 3,198.32 = 745.39 : x
  2. Step 2: Convert to fraction form
    2,132.10/3,198.32 = 745.39/x
  3. Step 3: Cross multiply
    2,132.10x = 3,198.32 × 745.39
  4. Step 4: Simplify right side
    2,132.10x = 2,383,995.74
  5. Step 5: Solve for x
    x = 2,383,995.74/2,132.10
  6. Step 6: Final answer
    x = 1,118.14

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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.