Home / 2,809.22-4,212.53-1,639.57

Finding the Fourth Proportional to 2,809.22, 4,212.53 and 1,639.57

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Solution

The fourth proportional to 2,809.22, 4,212.53 and 1,639.57 is: 2,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.22 : 4,212.53 = 1,639.57 : x
  2. Step 2: Convert to fraction form
    2,809.22/4,212.53 = 1,639.57/x
  3. Step 3: Cross multiply
    2,809.22x = 4,212.53 × 1,639.57
  4. Step 4: Simplify right side
    2,809.22x = 6,906,716.75
  5. Step 5: Solve for x
    x = 6,906,716.75/2,809.22
  6. Step 6: Final answer
    x = 2,458.59

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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.