Home / 3,896.73-5,377.29-2,128.01

Finding the Fourth Proportional to 3,896.73, 5,377.29 and 2,128.01

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Solution

The fourth proportional to 3,896.73, 5,377.29 and 2,128.01 is: 2,936.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.73 : 5,377.29 = 2,128.01 : x
  2. Step 2: Convert to fraction form
    3,896.73/5,377.29 = 2,128.01/x
  3. Step 3: Cross multiply
    3,896.73x = 5,377.29 × 2,128.01
  4. Step 4: Simplify right side
    3,896.73x = 11,442,900.01
  5. Step 5: Solve for x
    x = 11,442,900.01/3,896.73
  6. Step 6: Final answer
    x = 2,936.54

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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.