Home / 3,721.08-5,135.22-2,127.96

Finding the Fourth Proportional to 3,721.08, 5,135.22 and 2,127.96

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Solution

The fourth proportional to 3,721.08, 5,135.22 and 2,127.96 is: 2,936.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.08 : 5,135.22 = 2,127.96 : x
  2. Step 2: Convert to fraction form
    3,721.08/5,135.22 = 2,127.96/x
  3. Step 3: Cross multiply
    3,721.08x = 5,135.22 × 2,127.96
  4. Step 4: Simplify right side
    3,721.08x = 10,927,542.75
  5. Step 5: Solve for x
    x = 10,927,542.75/3,721.08
  6. Step 6: Final answer
    x = 2,936.66

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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.