Home / 1,351.21-2,025.82-426.27

Finding the Fourth Proportional to 1,351.21, 2,025.82 and 426.27

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Solution

The fourth proportional to 1,351.21, 2,025.82 and 426.27 is: 639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.21 : 2,025.82 = 426.27 : x
  2. Step 2: Convert to fraction form
    1,351.21/2,025.82 = 426.27/x
  3. Step 3: Cross multiply
    1,351.21x = 2,025.82 × 426.27
  4. Step 4: Simplify right side
    1,351.21x = 863,546.29
  5. Step 5: Solve for x
    x = 863,546.29/1,351.21
  6. Step 6: Final answer
    x = 639.09

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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.