Home / 3,896.29-5,376.81-2,127.88

Finding the Fourth Proportional to 3,896.29, 5,376.81 and 2,127.88

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Solution

The fourth proportional to 3,896.29, 5,376.81 and 2,127.88 is: 2,936.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.29 : 5,376.81 = 2,127.88 : x
  2. Step 2: Convert to fraction form
    3,896.29/5,376.81 = 2,127.88/x
  3. Step 3: Cross multiply
    3,896.29x = 5,376.81 × 2,127.88
  4. Step 4: Simplify right side
    3,896.29x = 11,441,206.46
  5. Step 5: Solve for x
    x = 11,441,206.46/3,896.29
  6. Step 6: Final answer
    x = 2,936.44

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1.5x scale

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.