Home / 5,147.41-7,103.40-2,789.55

Finding the Fourth Proportional to 5,147.41, 7,103.40 and 2,789.55

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Solution

The fourth proportional to 5,147.41, 7,103.40 and 2,789.55 is: 3,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.41 : 7,103.40 = 2,789.55 : x
  2. Step 2: Convert to fraction form
    5,147.41/7,103.40 = 2,789.55/x
  3. Step 3: Cross multiply
    5,147.41x = 7,103.40 × 2,789.55
  4. Step 4: Simplify right side
    5,147.41x = 19,815,289.47
  5. Step 5: Solve for x
    x = 19,815,289.47/5,147.41
  6. Step 6: Final answer
    x = 3,849.57

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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.