Home / 2,197.68-3,290.52-1,988.88

Finding the Fourth Proportional to 2,197.68, 3,290.52 and 1,988.88

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Solution

The fourth proportional to 2,197.68, 3,290.52 and 1,988.88 is: 2,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.68 : 3,290.52 = 1,988.88 : x
  2. Step 2: Convert to fraction form
    2,197.68/3,290.52 = 1,988.88/x
  3. Step 3: Cross multiply
    2,197.68x = 3,290.52 × 1,988.88
  4. Step 4: Simplify right side
    2,197.68x = 6,544,449.42
  5. Step 5: Solve for x
    x = 6,544,449.42/2,197.68
  6. Step 6: Final answer
    x = 2,977.89

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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.