Home / 3,868.67-5,338.79-2,100.27

Finding the Fourth Proportional to 3,868.67, 5,338.79 and 2,100.27

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Solution

The fourth proportional to 3,868.67, 5,338.79 and 2,100.27 is: 2,898.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.67 : 5,338.79 = 2,100.27 : x
  2. Step 2: Convert to fraction form
    3,868.67/5,338.79 = 2,100.27/x
  3. Step 3: Cross multiply
    3,868.67x = 5,338.79 × 2,100.27
  4. Step 4: Simplify right side
    3,868.67x = 11,212,889.97
  5. Step 5: Solve for x
    x = 11,212,889.97/3,868.67
  6. Step 6: Final answer
    x = 2,898.39

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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.