Home / 5,147.13-7,103.04-2,789.28

Finding the Fourth Proportional to 5,147.13, 7,103.04 and 2,789.28

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Solution

The fourth proportional to 5,147.13, 7,103.04 and 2,789.28 is: 3,849.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.13 : 7,103.04 = 2,789.28 : x
  2. Step 2: Convert to fraction form
    5,147.13/7,103.04 = 2,789.28/x
  3. Step 3: Cross multiply
    5,147.13x = 7,103.04 × 2,789.28
  4. Step 4: Simplify right side
    5,147.13x = 19,812,367.41
  5. Step 5: Solve for x
    x = 19,812,367.41/5,147.13
  6. Step 6: Final answer
    x = 3,849.21

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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.