Home / 2,208.25-3,310.14-1,387.11

Finding the Fourth Proportional to 2,208.25, 3,310.14 and 1,387.11

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Solution

The fourth proportional to 2,208.25, 3,310.14 and 1,387.11 is: 2,079.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.25 : 3,310.14 = 1,387.11 : x
  2. Step 2: Convert to fraction form
    2,208.25/3,310.14 = 1,387.11/x
  3. Step 3: Cross multiply
    2,208.25x = 3,310.14 × 1,387.11
  4. Step 4: Simplify right side
    2,208.25x = 4,591,511.74
  5. Step 5: Solve for x
    x = 4,591,511.74/2,208.25
  6. Step 6: Final answer
    x = 2,079.25

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1.5x scale

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.