Home / 5,249.38-7,871.60-1,961.60

Finding the Fourth Proportional to 5,249.38, 7,871.60 and 1,961.60

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Solution

The fourth proportional to 5,249.38, 7,871.60 and 1,961.60 is: 2,941.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.38 : 7,871.60 = 1,961.60 : x
  2. Step 2: Convert to fraction form
    5,249.38/7,871.60 = 1,961.60/x
  3. Step 3: Cross multiply
    5,249.38x = 7,871.60 × 1,961.60
  4. Step 4: Simplify right side
    5,249.38x = 15,440,930.56
  5. Step 5: Solve for x
    x = 15,440,930.56/5,249.38
  6. Step 6: Final answer
    x = 2,941.48

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1.5x scale

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.