Home / 3,212.78-4,819.90-1,021.64

Finding the Fourth Proportional to 3,212.78, 4,819.90 and 1,021.64

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Solution

The fourth proportional to 3,212.78, 4,819.90 and 1,021.64 is: 1,532.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.78 : 4,819.90 = 1,021.64 : x
  2. Step 2: Convert to fraction form
    3,212.78/4,819.90 = 1,021.64/x
  3. Step 3: Cross multiply
    3,212.78x = 4,819.90 × 1,021.64
  4. Step 4: Simplify right side
    3,212.78x = 4,924,202.64
  5. Step 5: Solve for x
    x = 4,924,202.64/3,212.78
  6. Step 6: Final answer
    x = 1,532.69

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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.