Home / 3,722.87-5,137.97-2,129.66

Finding the Fourth Proportional to 3,722.87, 5,137.97 and 2,129.66

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Solution

The fourth proportional to 3,722.87, 5,137.97 and 2,129.66 is: 2,939.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.87 : 5,137.97 = 2,129.66 : x
  2. Step 2: Convert to fraction form
    3,722.87/5,137.97 = 2,129.66/x
  3. Step 3: Cross multiply
    3,722.87x = 5,137.97 × 2,129.66
  4. Step 4: Simplify right side
    3,722.87x = 10,942,131.39
  5. Step 5: Solve for x
    x = 10,942,131.39/3,722.87
  6. Step 6: Final answer
    x = 2,939.17

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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.