Home / 2,205.38-3,021.41-2,122.35

Finding the Fourth Proportional to 2,205.38, 3,021.41 and 2,122.35

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Solution

The fourth proportional to 2,205.38, 3,021.41 and 2,122.35 is: 2,907.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.38 : 3,021.41 = 2,122.35 : x
  2. Step 2: Convert to fraction form
    2,205.38/3,021.41 = 2,122.35/x
  3. Step 3: Cross multiply
    2,205.38x = 3,021.41 × 2,122.35
  4. Step 4: Simplify right side
    2,205.38x = 6,412,478.90
  5. Step 5: Solve for x
    x = 6,412,478.90/2,205.38
  6. Step 6: Final answer
    x = 2,907.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.