Home / 3,109.26-4,661.82-2,122.38

Finding the Fourth Proportional to 3,109.26, 4,661.82 and 2,122.38

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Solution

The fourth proportional to 3,109.26, 4,661.82 and 2,122.38 is: 3,182.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.26 : 4,661.82 = 2,122.38 : x
  2. Step 2: Convert to fraction form
    3,109.26/4,661.82 = 2,122.38/x
  3. Step 3: Cross multiply
    3,109.26x = 4,661.82 × 2,122.38
  4. Step 4: Simplify right side
    3,109.26x = 9,894,153.53
  5. Step 5: Solve for x
    x = 9,894,153.53/3,109.26
  6. Step 6: Final answer
    x = 3,182.16

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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.