Home / 5,217.21-7,819.34-2,620.89

Finding the Fourth Proportional to 5,217.21, 7,819.34 and 2,620.89

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Solution

The fourth proportional to 5,217.21, 7,819.34 and 2,620.89 is: 3,928.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.21 : 7,819.34 = 2,620.89 : x
  2. Step 2: Convert to fraction form
    5,217.21/7,819.34 = 2,620.89/x
  3. Step 3: Cross multiply
    5,217.21x = 7,819.34 × 2,620.89
  4. Step 4: Simplify right side
    5,217.21x = 20,493,616.91
  5. Step 5: Solve for x
    x = 20,493,616.91/5,217.21
  6. Step 6: Final answer
    x = 3,928.08

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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.