Home / 5,209.20-7,188.66-2,819.16

Finding the Fourth Proportional to 5,209.20, 7,188.66 and 2,819.16

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Solution

The fourth proportional to 5,209.20, 7,188.66 and 2,819.16 is: 3,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.20 : 7,188.66 = 2,819.16 : x
  2. Step 2: Convert to fraction form
    5,209.20/7,188.66 = 2,819.16/x
  3. Step 3: Cross multiply
    5,209.20x = 7,188.66 × 2,819.16
  4. Step 4: Simplify right side
    5,209.20x = 20,265,982.73
  5. Step 5: Solve for x
    x = 20,265,982.73/5,209.20
  6. Step 6: Final answer
    x = 3,890.42

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1.5x scale

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.