Home / 3,310.80-4,569.14-2,189.78

Finding the Fourth Proportional to 3,310.80, 4,569.14 and 2,189.78

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Solution

The fourth proportional to 3,310.80, 4,569.14 and 2,189.78 is: 3,022.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,310.80 : 4,569.14 = 2,189.78 : x
  2. Step 2: Convert to fraction form
    3,310.80/4,569.14 = 2,189.78/x
  3. Step 3: Cross multiply
    3,310.80x = 4,569.14 × 2,189.78
  4. Step 4: Simplify right side
    3,310.80x = 10,005,411.39
  5. Step 5: Solve for x
    x = 10,005,411.39/3,310.80
  6. Step 6: Final answer
    x = 3,022.05

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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.