Home / 2,850.86-4,272.20-1,205.15

Finding the Fourth Proportional to 2,850.86, 4,272.20 and 1,205.15

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Solution

The fourth proportional to 2,850.86, 4,272.20 and 1,205.15 is: 1,805.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.86 : 4,272.20 = 1,205.15 : x
  2. Step 2: Convert to fraction form
    2,850.86/4,272.20 = 1,205.15/x
  3. Step 3: Cross multiply
    2,850.86x = 4,272.20 × 1,205.15
  4. Step 4: Simplify right side
    2,850.86x = 5,148,614.44
  5. Step 5: Solve for x
    x = 5,148,614.44/2,850.86
  6. Step 6: Final answer
    x = 1,805.99

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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.