Home / 2,819.90-4,228.63-2,171.09

Finding the Fourth Proportional to 2,819.90, 4,228.63 and 2,171.09

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Solution

The fourth proportional to 2,819.90, 4,228.63 and 2,171.09 is: 3,255.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.90 : 4,228.63 = 2,171.09 : x
  2. Step 2: Convert to fraction form
    2,819.90/4,228.63 = 2,171.09/x
  3. Step 3: Cross multiply
    2,819.90x = 4,228.63 × 2,171.09
  4. Step 4: Simplify right side
    2,819.90x = 9,180,736.31
  5. Step 5: Solve for x
    x = 9,180,736.31/2,819.90
  6. Step 6: Final answer
    x = 3,255.70

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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.