Home / 5,181.28-7,149.94-2,823.43

Finding the Fourth Proportional to 5,181.28, 7,149.94 and 2,823.43

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Solution

The fourth proportional to 5,181.28, 7,149.94 and 2,823.43 is: 3,896.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.28 : 7,149.94 = 2,823.43 : x
  2. Step 2: Convert to fraction form
    5,181.28/7,149.94 = 2,823.43/x
  3. Step 3: Cross multiply
    5,181.28x = 7,149.94 × 2,823.43
  4. Step 4: Simplify right side
    5,181.28x = 20,187,355.09
  5. Step 5: Solve for x
    x = 20,187,355.09/5,181.28
  6. Step 6: Final answer
    x = 3,896.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.