Home / 3,890.31-5,836.27-1,425.21

Finding the Fourth Proportional to 3,890.31, 5,836.27 and 1,425.21

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Solution

The fourth proportional to 3,890.31, 5,836.27 and 1,425.21 is: 2,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.31 : 5,836.27 = 1,425.21 : x
  2. Step 2: Convert to fraction form
    3,890.31/5,836.27 = 1,425.21/x
  3. Step 3: Cross multiply
    3,890.31x = 5,836.27 × 1,425.21
  4. Step 4: Simplify right side
    3,890.31x = 8,317,910.37
  5. Step 5: Solve for x
    x = 8,317,910.37/3,890.31
  6. Step 6: Final answer
    x = 2,138.11

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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.