Home / 5,811.39-8,721.41-3,219.39

Finding the Fourth Proportional to 5,811.39, 8,721.41 and 3,219.39

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Solution

The fourth proportional to 5,811.39, 8,721.41 and 3,219.39 is: 4,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.39 : 8,721.41 = 3,219.39 : x
  2. Step 2: Convert to fraction form
    5,811.39/8,721.41 = 3,219.39/x
  3. Step 3: Cross multiply
    5,811.39x = 8,721.41 × 3,219.39
  4. Step 4: Simplify right side
    5,811.39x = 28,077,604.04
  5. Step 5: Solve for x
    x = 28,077,604.04/5,811.39
  6. Step 6: Final answer
    x = 4,831.48

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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.