Home / 3,868.19-5,338.07-2,099.79

Finding the Fourth Proportional to 3,868.19, 5,338.07 and 2,099.79

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Solution

The fourth proportional to 3,868.19, 5,338.07 and 2,099.79 is: 2,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.19 : 5,338.07 = 2,099.79 : x
  2. Step 2: Convert to fraction form
    3,868.19/5,338.07 = 2,099.79/x
  3. Step 3: Cross multiply
    3,868.19x = 5,338.07 × 2,099.79
  4. Step 4: Simplify right side
    3,868.19x = 11,208,823.38
  5. Step 5: Solve for x
    x = 11,208,823.38/3,868.19
  6. Step 6: Final answer
    x = 2,897.69

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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.