Home / 2,879.34-4,286.29-2,745.15

Finding the Fourth Proportional to 2,879.34, 4,286.29 and 2,745.15

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Solution

The fourth proportional to 2,879.34, 4,286.29 and 2,745.15 is: 4,086.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.34 : 4,286.29 = 2,745.15 : x
  2. Step 2: Convert to fraction form
    2,879.34/4,286.29 = 2,745.15/x
  3. Step 3: Cross multiply
    2,879.34x = 4,286.29 × 2,745.15
  4. Step 4: Simplify right side
    2,879.34x = 11,766,508.99
  5. Step 5: Solve for x
    x = 11,766,508.99/2,879.34
  6. Step 6: Final answer
    x = 4,086.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.