Home / 3,836.30-5,742.30-2,742.80

Finding the Fourth Proportional to 3,836.30, 5,742.30 and 2,742.80

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Solution

The fourth proportional to 3,836.30, 5,742.30 and 2,742.80 is: 4,105.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.30 : 5,742.30 = 2,742.80 : x
  2. Step 2: Convert to fraction form
    3,836.30/5,742.30 = 2,742.80/x
  3. Step 3: Cross multiply
    3,836.30x = 5,742.30 × 2,742.80
  4. Step 4: Simplify right side
    3,836.30x = 15,749,980.44
  5. Step 5: Solve for x
    x = 15,749,980.44/3,836.30
  6. Step 6: Final answer
    x = 4,105.51

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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.