Home / 3,839.21-5,758.61-1,890.75

Finding the Fourth Proportional to 3,839.21, 5,758.61 and 1,890.75

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Solution

The fourth proportional to 3,839.21, 5,758.61 and 1,890.75 is: 2,836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.21 : 5,758.61 = 1,890.75 : x
  2. Step 2: Convert to fraction form
    3,839.21/5,758.61 = 1,890.75/x
  3. Step 3: Cross multiply
    3,839.21x = 5,758.61 × 1,890.75
  4. Step 4: Simplify right side
    3,839.21x = 10,888,082.40
  5. Step 5: Solve for x
    x = 10,888,082.40/3,839.21
  6. Step 6: Final answer
    x = 2,836.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.