Home / 5,147.56-7,103.60-2,789.68

Finding the Fourth Proportional to 5,147.56, 7,103.60 and 2,789.68

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Solution

The fourth proportional to 5,147.56, 7,103.60 and 2,789.68 is: 3,849.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.56 : 7,103.60 = 2,789.68 : x
  2. Step 2: Convert to fraction form
    5,147.56/7,103.60 = 2,789.68/x
  3. Step 3: Cross multiply
    5,147.56x = 7,103.60 × 2,789.68
  4. Step 4: Simplify right side
    5,147.56x = 19,816,770.85
  5. Step 5: Solve for x
    x = 19,816,770.85/5,147.56
  6. Step 6: Final answer
    x = 3,849.74

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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.