Home / 5,198.80-7,174.01-2,840.94

Finding the Fourth Proportional to 5,198.80, 7,174.01 and 2,840.94

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Solution

The fourth proportional to 5,198.80, 7,174.01 and 2,840.94 is: 3,920.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.80 : 7,174.01 = 2,840.94 : x
  2. Step 2: Convert to fraction form
    5,198.80/7,174.01 = 2,840.94/x
  3. Step 3: Cross multiply
    5,198.80x = 7,174.01 × 2,840.94
  4. Step 4: Simplify right side
    5,198.80x = 20,380,917.76
  5. Step 5: Solve for x
    x = 20,380,917.76/5,198.80
  6. Step 6: Final answer
    x = 3,920.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.