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Finding the Fourth Proportional to 5,789.92, 7,990.10 and 3,137.33

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Solution

The fourth proportional to 5,789.92, 7,990.10 and 3,137.33 is: 4,329.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.92 : 7,990.10 = 3,137.33 : x
  2. Step 2: Convert to fraction form
    5,789.92/7,990.10 = 3,137.33/x
  3. Step 3: Cross multiply
    5,789.92x = 7,990.10 × 3,137.33
  4. Step 4: Simplify right side
    5,789.92x = 25,067,580.43
  5. Step 5: Solve for x
    x = 25,067,580.43/5,789.92
  6. Step 6: Final answer
    x = 4,329.52

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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.