Home / 3,169.09-4,372-2,121.49

Finding the Fourth Proportional to 3,169.09, 4,372 and 2,121.49

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Solution

The fourth proportional to 3,169.09, 4,372 and 2,121.49 is: 2,926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.09 : 4,372 = 2,121.49 : x
  2. Step 2: Convert to fraction form
    3,169.09/4,372 = 2,121.49/x
  3. Step 3: Cross multiply
    3,169.09x = 4,372 × 2,121.49
  4. Step 4: Simplify right side
    3,169.09x = 9,275,154.28
  5. Step 5: Solve for x
    x = 9,275,154.28/3,169.09
  6. Step 6: Final answer
    x = 2,926.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.