Home / 2,190.66-3,286.05-892.14

Finding the Fourth Proportional to 2,190.66, 3,286.05 and 892.14

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Solution

The fourth proportional to 2,190.66, 3,286.05 and 892.14 is: 1,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.66 : 3,286.05 = 892.14 : x
  2. Step 2: Convert to fraction form
    2,190.66/3,286.05 = 892.14/x
  3. Step 3: Cross multiply
    2,190.66x = 3,286.05 × 892.14
  4. Step 4: Simplify right side
    2,190.66x = 2,931,616.65
  5. Step 5: Solve for x
    x = 2,931,616.65/2,190.66
  6. Step 6: Final answer
    x = 1,338.23

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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.