Home / 2,191.42-3,286.11-730.18

Finding the Fourth Proportional to 2,191.42, 3,286.11 and 730.18

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Solution

The fourth proportional to 2,191.42, 3,286.11 and 730.18 is: 1,094.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.42 : 3,286.11 = 730.18 : x
  2. Step 2: Convert to fraction form
    2,191.42/3,286.11 = 730.18/x
  3. Step 3: Cross multiply
    2,191.42x = 3,286.11 × 730.18
  4. Step 4: Simplify right side
    2,191.42x = 2,399,435.37
  5. Step 5: Solve for x
    x = 2,399,435.37/2,191.42
  6. Step 6: Final answer
    x = 1,094.93

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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.