Home / 2,198.88-3,290.76-2,108.16

Finding the Fourth Proportional to 2,198.88, 3,290.76 and 2,108.16

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Solution

The fourth proportional to 2,198.88, 3,290.76 and 2,108.16 is: 3,154.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.88 : 3,290.76 = 2,108.16 : x
  2. Step 2: Convert to fraction form
    2,198.88/3,290.76 = 2,108.16/x
  3. Step 3: Cross multiply
    2,198.88x = 3,290.76 × 2,108.16
  4. Step 4: Simplify right side
    2,198.88x = 6,937,448.60
  5. Step 5: Solve for x
    x = 6,937,448.60/2,198.88
  6. Step 6: Final answer
    x = 3,154.99

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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.