Home / 3,868.06-5,338.03-2,099.78

Finding the Fourth Proportional to 3,868.06, 5,338.03 and 2,099.78

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Solution

The fourth proportional to 3,868.06, 5,338.03 and 2,099.78 is: 2,897.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.06 : 5,338.03 = 2,099.78 : x
  2. Step 2: Convert to fraction form
    3,868.06/5,338.03 = 2,099.78/x
  3. Step 3: Cross multiply
    3,868.06x = 5,338.03 × 2,099.78
  4. Step 4: Simplify right side
    3,868.06x = 11,208,684.59
  5. Step 5: Solve for x
    x = 11,208,684.59/3,868.06
  6. Step 6: Final answer
    x = 2,897.76

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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.