Home / 3,212.59-4,815.34-2,101.54

Finding the Fourth Proportional to 3,212.59, 4,815.34 and 2,101.54

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Solution

The fourth proportional to 3,212.59, 4,815.34 and 2,101.54 is: 3,149.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.59 : 4,815.34 = 2,101.54 : x
  2. Step 2: Convert to fraction form
    3,212.59/4,815.34 = 2,101.54/x
  3. Step 3: Cross multiply
    3,212.59x = 4,815.34 × 2,101.54
  4. Step 4: Simplify right side
    3,212.59x = 10,119,619.12
  5. Step 5: Solve for x
    x = 10,119,619.12/3,212.59
  6. Step 6: Final answer
    x = 3,149.99

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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.