Home / 2,672.75-4,009.99-1,286.20

Finding the Fourth Proportional to 2,672.75, 4,009.99 and 1,286.20

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Solution

The fourth proportional to 2,672.75, 4,009.99 and 1,286.20 is: 1,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.75 : 4,009.99 = 1,286.20 : x
  2. Step 2: Convert to fraction form
    2,672.75/4,009.99 = 1,286.20/x
  3. Step 3: Cross multiply
    2,672.75x = 4,009.99 × 1,286.20
  4. Step 4: Simplify right side
    2,672.75x = 5,157,632.30
  5. Step 5: Solve for x
    x = 5,157,632.30/2,672.75
  6. Step 6: Final answer
    x = 1,929.71

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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.