Home / 3,428.05-5,138.16-1,347.43

Finding the Fourth Proportional to 3,428.05, 5,138.16 and 1,347.43

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Solution

The fourth proportional to 3,428.05, 5,138.16 and 1,347.43 is: 2,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.05 : 5,138.16 = 1,347.43 : x
  2. Step 2: Convert to fraction form
    3,428.05/5,138.16 = 1,347.43/x
  3. Step 3: Cross multiply
    3,428.05x = 5,138.16 × 1,347.43
  4. Step 4: Simplify right side
    3,428.05x = 6,923,310.93
  5. Step 5: Solve for x
    x = 6,923,310.93/3,428.05
  6. Step 6: Final answer
    x = 2,019.61

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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.