Home / 2,131.41-3,198.09-961.73

Finding the Fourth Proportional to 2,131.41, 3,198.09 and 961.73

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Solution

The fourth proportional to 2,131.41, 3,198.09 and 961.73 is: 1,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.41 : 3,198.09 = 961.73 : x
  2. Step 2: Convert to fraction form
    2,131.41/3,198.09 = 961.73/x
  3. Step 3: Cross multiply
    2,131.41x = 3,198.09 × 961.73
  4. Step 4: Simplify right side
    2,131.41x = 3,075,683.11
  5. Step 5: Solve for x
    x = 3,075,683.11/2,131.41
  6. Step 6: Final answer
    x = 1,443.03

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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.