Home / 3,981.45-5,976.21-1,642.86

Finding the Fourth Proportional to 3,981.45, 5,976.21 and 1,642.86

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Solution

The fourth proportional to 3,981.45, 5,976.21 and 1,642.86 is: 2,465.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.45 : 5,976.21 = 1,642.86 : x
  2. Step 2: Convert to fraction form
    3,981.45/5,976.21 = 1,642.86/x
  3. Step 3: Cross multiply
    3,981.45x = 5,976.21 × 1,642.86
  4. Step 4: Simplify right side
    3,981.45x = 9,818,076.36
  5. Step 5: Solve for x
    x = 9,818,076.36/3,981.45
  6. Step 6: Final answer
    x = 2,465.95

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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.