Home / 3,936.66-5,428.09-2,940.26

Finding the Fourth Proportional to 3,936.66, 5,428.09 and 2,940.26

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Solution

The fourth proportional to 3,936.66, 5,428.09 and 2,940.26 is: 4,054.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.66 : 5,428.09 = 2,940.26 : x
  2. Step 2: Convert to fraction form
    3,936.66/5,428.09 = 2,940.26/x
  3. Step 3: Cross multiply
    3,936.66x = 5,428.09 × 2,940.26
  4. Step 4: Simplify right side
    3,936.66x = 15,959,981.77
  5. Step 5: Solve for x
    x = 15,959,981.77/3,936.66
  6. Step 6: Final answer
    x = 4,054.19

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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.