Home / 3,819.99-5,272.34-2,491.39

Finding the Fourth Proportional to 3,819.99, 5,272.34 and 2,491.39

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Solution

The fourth proportional to 3,819.99, 5,272.34 and 2,491.39 is: 3,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.99 : 5,272.34 = 2,491.39 : x
  2. Step 2: Convert to fraction form
    3,819.99/5,272.34 = 2,491.39/x
  3. Step 3: Cross multiply
    3,819.99x = 5,272.34 × 2,491.39
  4. Step 4: Simplify right side
    3,819.99x = 13,135,449.29
  5. Step 5: Solve for x
    x = 13,135,449.29/3,819.99
  6. Step 6: Final answer
    x = 3,438.60

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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.