Home / 2,191.26-3,286.80-892.68

Finding the Fourth Proportional to 2,191.26, 3,286.80 and 892.68

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Solution

The fourth proportional to 2,191.26, 3,286.80 and 892.68 is: 1,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.26 : 3,286.80 = 892.68 : x
  2. Step 2: Convert to fraction form
    2,191.26/3,286.80 = 892.68/x
  3. Step 3: Cross multiply
    2,191.26x = 3,286.80 × 892.68
  4. Step 4: Simplify right side
    2,191.26x = 2,934,060.62
  5. Step 5: Solve for x
    x = 2,934,060.62/2,191.26
  6. Step 6: Final answer
    x = 1,338.98

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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.