Home / 3,896.40-5,376.99-2,127.99

Finding the Fourth Proportional to 3,896.40, 5,376.99 and 2,127.99

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Solution

The fourth proportional to 3,896.40, 5,376.99 and 2,127.99 is: 2,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.40 : 5,376.99 = 2,127.99 : x
  2. Step 2: Convert to fraction form
    3,896.40/5,376.99 = 2,127.99/x
  3. Step 3: Cross multiply
    3,896.40x = 5,376.99 × 2,127.99
  4. Step 4: Simplify right side
    3,896.40x = 11,442,180.95
  5. Step 5: Solve for x
    x = 11,442,180.95/3,896.40
  6. Step 6: Final answer
    x = 2,936.60

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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.