Home / 2,231.28-3,366.90-2,141.37

Finding the Fourth Proportional to 2,231.28, 3,366.90 and 2,141.37

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Solution

The fourth proportional to 2,231.28, 3,366.90 and 2,141.37 is: 3,231.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.28 : 3,366.90 = 2,141.37 : x
  2. Step 2: Convert to fraction form
    2,231.28/3,366.90 = 2,141.37/x
  3. Step 3: Cross multiply
    2,231.28x = 3,366.90 × 2,141.37
  4. Step 4: Simplify right side
    2,231.28x = 7,209,778.65
  5. Step 5: Solve for x
    x = 7,209,778.65/2,231.28
  6. Step 6: Final answer
    x = 3,231.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.