Home / 3,428.72-5,142.43-1,671.96

Finding the Fourth Proportional to 3,428.72, 5,142.43 and 1,671.96

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Solution

The fourth proportional to 3,428.72, 5,142.43 and 1,671.96 is: 2,507.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.72 : 5,142.43 = 1,671.96 : x
  2. Step 2: Convert to fraction form
    3,428.72/5,142.43 = 1,671.96/x
  3. Step 3: Cross multiply
    3,428.72x = 5,142.43 × 1,671.96
  4. Step 4: Simplify right side
    3,428.72x = 8,597,937.26
  5. Step 5: Solve for x
    x = 8,597,937.26/3,428.72
  6. Step 6: Final answer
    x = 2,507.62

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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.