Home / 3,896.61-5,377.12-2,127.87

Finding the Fourth Proportional to 3,896.61, 5,377.12 and 2,127.87

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Solution

The fourth proportional to 3,896.61, 5,377.12 and 2,127.87 is: 2,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.61 : 5,377.12 = 2,127.87 : x
  2. Step 2: Convert to fraction form
    3,896.61/5,377.12 = 2,127.87/x
  3. Step 3: Cross multiply
    3,896.61x = 5,377.12 × 2,127.87
  4. Step 4: Simplify right side
    3,896.61x = 11,441,812.33
  5. Step 5: Solve for x
    x = 11,441,812.33/3,896.61
  6. Step 6: Final answer
    x = 2,936.35

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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.