Home / 2,135.21-3,205.09-1,889.97

Finding the Fourth Proportional to 2,135.21, 3,205.09 and 1,889.97

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Solution

The fourth proportional to 2,135.21, 3,205.09 and 1,889.97 is: 2,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.21 : 3,205.09 = 1,889.97 : x
  2. Step 2: Convert to fraction form
    2,135.21/3,205.09 = 1,889.97/x
  3. Step 3: Cross multiply
    2,135.21x = 3,205.09 × 1,889.97
  4. Step 4: Simplify right side
    2,135.21x = 6,057,521.69
  5. Step 5: Solve for x
    x = 6,057,521.69/2,135.21
  6. Step 6: Final answer
    x = 2,836.97

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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.