Home / 2,198.10-3,296.63-637.69

Finding the Fourth Proportional to 2,198.10, 3,296.63 and 637.69

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Solution

The fourth proportional to 2,198.10, 3,296.63 and 637.69 is: 956.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.10 : 3,296.63 = 637.69 : x
  2. Step 2: Convert to fraction form
    2,198.10/3,296.63 = 637.69/x
  3. Step 3: Cross multiply
    2,198.10x = 3,296.63 × 637.69
  4. Step 4: Simplify right side
    2,198.10x = 2,102,227.98
  5. Step 5: Solve for x
    x = 2,102,227.98/2,198.10
  6. Step 6: Final answer
    x = 956.38

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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.