Home / 3,106.77-4,286.49-2,161.50

Finding the Fourth Proportional to 3,106.77, 4,286.49 and 2,161.50

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Solution

The fourth proportional to 3,106.77, 4,286.49 and 2,161.50 is: 2,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.77 : 4,286.49 = 2,161.50 : x
  2. Step 2: Convert to fraction form
    3,106.77/4,286.49 = 2,161.50/x
  3. Step 3: Cross multiply
    3,106.77x = 4,286.49 × 2,161.50
  4. Step 4: Simplify right side
    3,106.77x = 9,265,248.14
  5. Step 5: Solve for x
    x = 9,265,248.14/3,106.77
  6. Step 6: Final answer
    x = 2,982.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.