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Finding the Fourth Proportional to 3,995.47, 5,992.64 and 2,120.54

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Solution

The fourth proportional to 3,995.47, 5,992.64 and 2,120.54 is: 3,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.47 : 5,992.64 = 2,120.54 : x
  2. Step 2: Convert to fraction form
    3,995.47/5,992.64 = 2,120.54/x
  3. Step 3: Cross multiply
    3,995.47x = 5,992.64 × 2,120.54
  4. Step 4: Simplify right side
    3,995.47x = 12,707,618.31
  5. Step 5: Solve for x
    x = 12,707,618.31/3,995.47
  6. Step 6: Final answer
    x = 3,180.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.