Home / 3,989.45-5,981.19-2,753.33

Finding the Fourth Proportional to 3,989.45, 5,981.19 and 2,753.33

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Solution

The fourth proportional to 3,989.45, 5,981.19 and 2,753.33 is: 4,127.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.45 : 5,981.19 = 2,753.33 : x
  2. Step 2: Convert to fraction form
    3,989.45/5,981.19 = 2,753.33/x
  3. Step 3: Cross multiply
    3,989.45x = 5,981.19 × 2,753.33
  4. Step 4: Simplify right side
    3,989.45x = 16,468,189.86
  5. Step 5: Solve for x
    x = 16,468,189.86/3,989.45
  6. Step 6: Final answer
    x = 4,127.93

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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.