Home / 5,147.19-7,103.15-2,789.33

Finding the Fourth Proportional to 5,147.19, 7,103.15 and 2,789.33

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Solution

The fourth proportional to 5,147.19, 7,103.15 and 2,789.33 is: 3,849.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.19 : 7,103.15 = 2,789.33 : x
  2. Step 2: Convert to fraction form
    5,147.19/7,103.15 = 2,789.33/x
  3. Step 3: Cross multiply
    5,147.19x = 7,103.15 × 2,789.33
  4. Step 4: Simplify right side
    5,147.19x = 19,812,979.93
  5. Step 5: Solve for x
    x = 19,812,979.93/5,147.19
  6. Step 6: Final answer
    x = 3,849.28

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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.