Home / 3,868.11-5,338.01-2,099.75

Finding the Fourth Proportional to 3,868.11, 5,338.01 and 2,099.75

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Solution

The fourth proportional to 3,868.11, 5,338.01 and 2,099.75 is: 2,897.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.11 : 5,338.01 = 2,099.75 : x
  2. Step 2: Convert to fraction form
    3,868.11/5,338.01 = 2,099.75/x
  3. Step 3: Cross multiply
    3,868.11x = 5,338.01 × 2,099.75
  4. Step 4: Simplify right side
    3,868.11x = 11,208,465.06
  5. Step 5: Solve for x
    x = 11,208,465.06/3,868.11
  6. Step 6: Final answer
    x = 2,897.66

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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.