Home / 3,992.52-5,989.32-1,395.12

Finding the Fourth Proportional to 3,992.52, 5,989.32 and 1,395.12

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Solution

The fourth proportional to 3,992.52, 5,989.32 and 1,395.12 is: 2,092.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.52 : 5,989.32 = 1,395.12 : x
  2. Step 2: Convert to fraction form
    3,992.52/5,989.32 = 1,395.12/x
  3. Step 3: Cross multiply
    3,992.52x = 5,989.32 × 1,395.12
  4. Step 4: Simplify right side
    3,992.52x = 8,355,820.12
  5. Step 5: Solve for x
    x = 8,355,820.12/3,992.52
  6. Step 6: Final answer
    x = 2,092.87

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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.