Home / 2,772.87-4,160.60-1,212.67

Finding the Fourth Proportional to 2,772.87, 4,160.60 and 1,212.67

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Solution

The fourth proportional to 2,772.87, 4,160.60 and 1,212.67 is: 1,819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.87 : 4,160.60 = 1,212.67 : x
  2. Step 2: Convert to fraction form
    2,772.87/4,160.60 = 1,212.67/x
  3. Step 3: Cross multiply
    2,772.87x = 4,160.60 × 1,212.67
  4. Step 4: Simplify right side
    2,772.87x = 5,045,407.94
  5. Step 5: Solve for x
    x = 5,045,407.94/2,772.87
  6. Step 6: Final answer
    x = 1,819.56

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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.