Home / 3,896.48-5,377.10-2,128.08

Finding the Fourth Proportional to 3,896.48, 5,377.10 and 2,128.08

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Solution

The fourth proportional to 3,896.48, 5,377.10 and 2,128.08 is: 2,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.48 : 5,377.10 = 2,128.08 : x
  2. Step 2: Convert to fraction form
    3,896.48/5,377.10 = 2,128.08/x
  3. Step 3: Cross multiply
    3,896.48x = 5,377.10 × 2,128.08
  4. Step 4: Simplify right side
    3,896.48x = 11,442,898.97
  5. Step 5: Solve for x
    x = 11,442,898.97/3,896.48
  6. Step 6: Final answer
    x = 2,936.73

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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.