Home / 3,391.26-5,082.84-1,928.40

Finding the Fourth Proportional to 3,391.26, 5,082.84 and 1,928.40

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Solution

The fourth proportional to 3,391.26, 5,082.84 and 1,928.40 is: 2,890.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.26 : 5,082.84 = 1,928.40 : x
  2. Step 2: Convert to fraction form
    3,391.26/5,082.84 = 1,928.40/x
  3. Step 3: Cross multiply
    3,391.26x = 5,082.84 × 1,928.40
  4. Step 4: Simplify right side
    3,391.26x = 9,801,748.66
  5. Step 5: Solve for x
    x = 9,801,748.66/3,391.26
  6. Step 6: Final answer
    x = 2,890.30

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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.