Home / 5,147.40-7,103.44-2,789.56

Finding the Fourth Proportional to 5,147.40, 7,103.44 and 2,789.56

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Solution

The fourth proportional to 5,147.40, 7,103.44 and 2,789.56 is: 3,849.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.40 : 7,103.44 = 2,789.56 : x
  2. Step 2: Convert to fraction form
    5,147.40/7,103.44 = 2,789.56/x
  3. Step 3: Cross multiply
    5,147.40x = 7,103.44 × 2,789.56
  4. Step 4: Simplify right side
    5,147.40x = 19,815,472.09
  5. Step 5: Solve for x
    x = 19,815,472.09/5,147.40
  6. Step 6: Final answer
    x = 3,849.61

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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.