Home / 2,745.72-4,120.20-1,015.56

Finding the Fourth Proportional to 2,745.72, 4,120.20 and 1,015.56

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Solution

The fourth proportional to 2,745.72, 4,120.20 and 1,015.56 is: 1,523.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.72 : 4,120.20 = 1,015.56 : x
  2. Step 2: Convert to fraction form
    2,745.72/4,120.20 = 1,015.56/x
  3. Step 3: Cross multiply
    2,745.72x = 4,120.20 × 1,015.56
  4. Step 4: Simplify right side
    2,745.72x = 4,184,310.31
  5. Step 5: Solve for x
    x = 4,184,310.31/2,745.72
  6. Step 6: Final answer
    x = 1,523.94

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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.