Home / 3,211.23-4,819.85-1,631.08

Finding the Fourth Proportional to 3,211.23, 4,819.85 and 1,631.08

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Solution

The fourth proportional to 3,211.23, 4,819.85 and 1,631.08 is: 2,448.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.23 : 4,819.85 = 1,631.08 : x
  2. Step 2: Convert to fraction form
    3,211.23/4,819.85 = 1,631.08/x
  3. Step 3: Cross multiply
    3,211.23x = 4,819.85 × 1,631.08
  4. Step 4: Simplify right side
    3,211.23x = 7,861,556.58
  5. Step 5: Solve for x
    x = 7,861,556.58/3,211.23
  6. Step 6: Final answer
    x = 2,448.14

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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.