Home / 3,868.35-5,338.43-2,166.99

Finding the Fourth Proportional to 3,868.35, 5,338.43 and 2,166.99

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Solution

The fourth proportional to 3,868.35, 5,338.43 and 2,166.99 is: 2,990.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.35 : 5,338.43 = 2,166.99 : x
  2. Step 2: Convert to fraction form
    3,868.35/5,338.43 = 2,166.99/x
  3. Step 3: Cross multiply
    3,868.35x = 5,338.43 × 2,166.99
  4. Step 4: Simplify right side
    3,868.35x = 11,568,324.43
  5. Step 5: Solve for x
    x = 11,568,324.43/3,868.35
  6. Step 6: Final answer
    x = 2,990.51

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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.