Home / 3,905.62-5,389.75-2,137.23

Finding the Fourth Proportional to 3,905.62, 5,389.75 and 2,137.23

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Solution

The fourth proportional to 3,905.62, 5,389.75 and 2,137.23 is: 2,949.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.62 : 5,389.75 = 2,137.23 : x
  2. Step 2: Convert to fraction form
    3,905.62/5,389.75 = 2,137.23/x
  3. Step 3: Cross multiply
    3,905.62x = 5,389.75 × 2,137.23
  4. Step 4: Simplify right side
    3,905.62x = 11,519,135.39
  5. Step 5: Solve for x
    x = 11,519,135.39/3,905.62
  6. Step 6: Final answer
    x = 2,949.37

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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.