Home / 3,896.44-5,377.08-2,128.07

Finding the Fourth Proportional to 3,896.44, 5,377.08 and 2,128.07

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Solution

The fourth proportional to 3,896.44, 5,377.08 and 2,128.07 is: 2,936.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.44 : 5,377.08 = 2,128.07 : x
  2. Step 2: Convert to fraction form
    3,896.44/5,377.08 = 2,128.07/x
  3. Step 3: Cross multiply
    3,896.44x = 5,377.08 × 2,128.07
  4. Step 4: Simplify right side
    3,896.44x = 11,442,824.06
  5. Step 5: Solve for x
    x = 11,442,824.06/3,896.44
  6. Step 6: Final answer
    x = 2,936.74

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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.