Home / 3,896.16-5,376.81-2,127.79

Finding the Fourth Proportional to 3,896.16, 5,376.81 and 2,127.79

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Solution

The fourth proportional to 3,896.16, 5,376.81 and 2,127.79 is: 2,936.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.16 : 5,376.81 = 2,127.79 : x
  2. Step 2: Convert to fraction form
    3,896.16/5,376.81 = 2,127.79/x
  3. Step 3: Cross multiply
    3,896.16x = 5,376.81 × 2,127.79
  4. Step 4: Simplify right side
    3,896.16x = 11,440,722.55
  5. Step 5: Solve for x
    x = 11,440,722.55/3,896.16
  6. Step 6: Final answer
    x = 2,936.41

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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.