Home / 2,821.38-4,229.56-1,339.69

Finding the Fourth Proportional to 2,821.38, 4,229.56 and 1,339.69

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Solution

The fourth proportional to 2,821.38, 4,229.56 and 1,339.69 is: 2,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.38 : 4,229.56 = 1,339.69 : x
  2. Step 2: Convert to fraction form
    2,821.38/4,229.56 = 1,339.69/x
  3. Step 3: Cross multiply
    2,821.38x = 4,229.56 × 1,339.69
  4. Step 4: Simplify right side
    2,821.38x = 5,666,299.24
  5. Step 5: Solve for x
    x = 5,666,299.24/2,821.38
  6. Step 6: Final answer
    x = 2,008.34

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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.