Home / 2,190.28-3,285.42-2,137.48

Finding the Fourth Proportional to 2,190.28, 3,285.42 and 2,137.48

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Solution

The fourth proportional to 2,190.28, 3,285.42 and 2,137.48 is: 3,206.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.28 : 3,285.42 = 2,137.48 : x
  2. Step 2: Convert to fraction form
    2,190.28/3,285.42 = 2,137.48/x
  3. Step 3: Cross multiply
    2,190.28x = 3,285.42 × 2,137.48
  4. Step 4: Simplify right side
    2,190.28x = 7,022,519.54
  5. Step 5: Solve for x
    x = 7,022,519.54/2,190.28
  6. Step 6: Final answer
    x = 3,206.22

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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.