Home / 5,249.43-7,871.85-2,783.70

Finding the Fourth Proportional to 5,249.43, 7,871.85 and 2,783.70

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Solution

The fourth proportional to 5,249.43, 7,871.85 and 2,783.70 is: 4,174.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.43 : 7,871.85 = 2,783.70 : x
  2. Step 2: Convert to fraction form
    5,249.43/7,871.85 = 2,783.70/x
  3. Step 3: Cross multiply
    5,249.43x = 7,871.85 × 2,783.70
  4. Step 4: Simplify right side
    5,249.43x = 21,912,868.85
  5. Step 5: Solve for x
    x = 21,912,868.85/5,249.43
  6. Step 6: Final answer
    x = 4,174.33

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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.