Home / 3,428.40-5,143.96-2,042.38

Finding the Fourth Proportional to 3,428.40, 5,143.96 and 2,042.38

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Solution

The fourth proportional to 3,428.40, 5,143.96 and 2,042.38 is: 3,064.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.40 : 5,143.96 = 2,042.38 : x
  2. Step 2: Convert to fraction form
    3,428.40/5,143.96 = 2,042.38/x
  3. Step 3: Cross multiply
    3,428.40x = 5,143.96 × 2,042.38
  4. Step 4: Simplify right side
    3,428.40x = 10,505,921.02
  5. Step 5: Solve for x
    x = 10,505,921.02/3,428.40
  6. Step 6: Final answer
    x = 3,064.38

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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.