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Finding the Fourth Proportional to 2,808.52, 3,874.98 and 1,813.84

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Solution

The fourth proportional to 2,808.52, 3,874.98 and 1,813.84 is: 2,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.52 : 3,874.98 = 1,813.84 : x
  2. Step 2: Convert to fraction form
    2,808.52/3,874.98 = 1,813.84/x
  3. Step 3: Cross multiply
    2,808.52x = 3,874.98 × 1,813.84
  4. Step 4: Simplify right side
    2,808.52x = 7,028,593.72
  5. Step 5: Solve for x
    x = 7,028,593.72/2,808.52
  6. Step 6: Final answer
    x = 2,502.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.