Home / 3,209.73-4,819.05-2,121.09

Finding the Fourth Proportional to 3,209.73, 4,819.05 and 2,121.09

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Solution

The fourth proportional to 3,209.73, 4,819.05 and 2,121.09 is: 3,184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.73 : 4,819.05 = 2,121.09 : x
  2. Step 2: Convert to fraction form
    3,209.73/4,819.05 = 2,121.09/x
  3. Step 3: Cross multiply
    3,209.73x = 4,819.05 × 2,121.09
  4. Step 4: Simplify right side
    3,209.73x = 10,221,638.76
  5. Step 5: Solve for x
    x = 10,221,638.76/3,209.73
  6. Step 6: Final answer
    x = 3,184.58

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1.5x scale

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.