Home / 3,821.05-5,731.68-1,819.30

Finding the Fourth Proportional to 3,821.05, 5,731.68 and 1,819.30

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Solution

The fourth proportional to 3,821.05, 5,731.68 and 1,819.30 is: 2,729.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.05 : 5,731.68 = 1,819.30 : x
  2. Step 2: Convert to fraction form
    3,821.05/5,731.68 = 1,819.30/x
  3. Step 3: Cross multiply
    3,821.05x = 5,731.68 × 1,819.30
  4. Step 4: Simplify right side
    3,821.05x = 10,427,645.42
  5. Step 5: Solve for x
    x = 10,427,645.42/3,821.05
  6. Step 6: Final answer
    x = 2,729.00

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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.