Home / 3,487.62-5,231.42-2,190.00

Finding the Fourth Proportional to 3,487.62, 5,231.42 and 2,190.00

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Solution

The fourth proportional to 3,487.62, 5,231.42 and 2,190.00 is: 3,284.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.62 : 5,231.42 = 2,190.00 : x
  2. Step 2: Convert to fraction form
    3,487.62/5,231.42 = 2,190.00/x
  3. Step 3: Cross multiply
    3,487.62x = 5,231.42 × 2,190.00
  4. Step 4: Simplify right side
    3,487.62x = 11,456,789.12
  5. Step 5: Solve for x
    x = 11,456,789.12/3,487.62
  6. Step 6: Final answer
    x = 3,284.99

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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.