Home / 2,198.49-3,281.04-2,109.18

Finding the Fourth Proportional to 2,198.49, 3,281.04 and 2,109.18

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Solution

The fourth proportional to 2,198.49, 3,281.04 and 2,109.18 is: 3,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.49 : 3,281.04 = 2,109.18 : x
  2. Step 2: Convert to fraction form
    2,198.49/3,281.04 = 2,109.18/x
  3. Step 3: Cross multiply
    2,198.49x = 3,281.04 × 2,109.18
  4. Step 4: Simplify right side
    2,198.49x = 6,920,303.95
  5. Step 5: Solve for x
    x = 6,920,303.95/2,198.49
  6. Step 6: Final answer
    x = 3,147.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.