Home / 3,138.32-4,720.44-2,749.52

Finding the Fourth Proportional to 3,138.32, 4,720.44 and 2,749.52

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Solution

The fourth proportional to 3,138.32, 4,720.44 and 2,749.52 is: 4,135.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.32 : 4,720.44 = 2,749.52 : x
  2. Step 2: Convert to fraction form
    3,138.32/4,720.44 = 2,749.52/x
  3. Step 3: Cross multiply
    3,138.32x = 4,720.44 × 2,749.52
  4. Step 4: Simplify right side
    3,138.32x = 12,978,944.19
  5. Step 5: Solve for x
    x = 12,978,944.19/3,138.32
  6. Step 6: Final answer
    x = 4,135.63

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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.