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Finding the Fourth Proportional to 2,197.83, 3,297.05 and 813.11

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Solution

The fourth proportional to 2,197.83, 3,297.05 and 813.11 is: 1,219.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.83 : 3,297.05 = 813.11 : x
  2. Step 2: Convert to fraction form
    2,197.83/3,297.05 = 813.11/x
  3. Step 3: Cross multiply
    2,197.83x = 3,297.05 × 813.11
  4. Step 4: Simplify right side
    2,197.83x = 2,680,843.77
  5. Step 5: Solve for x
    x = 2,680,843.77/2,197.83
  6. Step 6: Final answer
    x = 1,219.77

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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.