Home / 3,099.78-4,251.47-2,749.86

Finding the Fourth Proportional to 3,099.78, 4,251.47 and 2,749.86

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Solution

The fourth proportional to 3,099.78, 4,251.47 and 2,749.86 is: 3,771.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.78 : 4,251.47 = 2,749.86 : x
  2. Step 2: Convert to fraction form
    3,099.78/4,251.47 = 2,749.86/x
  3. Step 3: Cross multiply
    3,099.78x = 4,251.47 × 2,749.86
  4. Step 4: Simplify right side
    3,099.78x = 11,690,933.54
  5. Step 5: Solve for x
    x = 11,690,933.54/3,099.78
  6. Step 6: Final answer
    x = 3,771.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.