Home / 5,179.14-7,147.24-2,821.28

Finding the Fourth Proportional to 5,179.14, 7,147.24 and 2,821.28

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Solution

The fourth proportional to 5,179.14, 7,147.24 and 2,821.28 is: 3,893.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.14 : 7,147.24 = 2,821.28 : x
  2. Step 2: Convert to fraction form
    5,179.14/7,147.24 = 2,821.28/x
  3. Step 3: Cross multiply
    5,179.14x = 7,147.24 × 2,821.28
  4. Step 4: Simplify right side
    5,179.14x = 20,164,365.27
  5. Step 5: Solve for x
    x = 20,164,365.27/5,179.14
  6. Step 6: Final answer
    x = 3,893.38

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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.