Home / 2,191.26-3,286.90-958.36

Finding the Fourth Proportional to 2,191.26, 3,286.90 and 958.36

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Solution

The fourth proportional to 2,191.26, 3,286.90 and 958.36 is: 1,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.26 : 3,286.90 = 958.36 : x
  2. Step 2: Convert to fraction form
    2,191.26/3,286.90 = 958.36/x
  3. Step 3: Cross multiply
    2,191.26x = 3,286.90 × 958.36
  4. Step 4: Simplify right side
    2,191.26x = 3,150,033.48
  5. Step 5: Solve for x
    x = 3,150,033.48/2,191.26
  6. Step 6: Final answer
    x = 1,437.54

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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.