Home / 2,198.13-3,296.70-637.78

Finding the Fourth Proportional to 2,198.13, 3,296.70 and 637.78

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Solution

The fourth proportional to 2,198.13, 3,296.70 and 637.78 is: 956.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.13 : 3,296.70 = 637.78 : x
  2. Step 2: Convert to fraction form
    2,198.13/3,296.70 = 637.78/x
  3. Step 3: Cross multiply
    2,198.13x = 3,296.70 × 637.78
  4. Step 4: Simplify right side
    2,198.13x = 2,102,569.33
  5. Step 5: Solve for x
    x = 2,102,569.33/2,198.13
  6. Step 6: Final answer
    x = 956.53

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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.