Home / 2,190.36-3,286.26-2,141.88

Finding the Fourth Proportional to 2,190.36, 3,286.26 and 2,141.88

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Solution

The fourth proportional to 2,190.36, 3,286.26 and 2,141.88 is: 3,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.36 : 3,286.26 = 2,141.88 : x
  2. Step 2: Convert to fraction form
    2,190.36/3,286.26 = 2,141.88/x
  3. Step 3: Cross multiply
    2,190.36x = 3,286.26 × 2,141.88
  4. Step 4: Simplify right side
    2,190.36x = 7,038,774.57
  5. Step 5: Solve for x
    x = 7,038,774.57/2,190.36
  6. Step 6: Final answer
    x = 3,213.52

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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.