Home / 5,147.24-7,103.18-2,789.38

Finding the Fourth Proportional to 5,147.24, 7,103.18 and 2,789.38

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Solution

The fourth proportional to 5,147.24, 7,103.18 and 2,789.38 is: 3,849.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.24 : 7,103.18 = 2,789.38 : x
  2. Step 2: Convert to fraction form
    5,147.24/7,103.18 = 2,789.38/x
  3. Step 3: Cross multiply
    5,147.24x = 7,103.18 × 2,789.38
  4. Step 4: Simplify right side
    5,147.24x = 19,813,418.77
  5. Step 5: Solve for x
    x = 19,813,418.77/5,147.24
  6. Step 6: Final answer
    x = 3,849.33

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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.