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Finding the Fourth Proportional to 1,808.57, 2,712.49 and 834.53

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Solution

The fourth proportional to 1,808.57, 2,712.49 and 834.53 is: 1,251.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.57 : 2,712.49 = 834.53 : x
  2. Step 2: Convert to fraction form
    1,808.57/2,712.49 = 834.53/x
  3. Step 3: Cross multiply
    1,808.57x = 2,712.49 × 834.53
  4. Step 4: Simplify right side
    1,808.57x = 2,263,654.28
  5. Step 5: Solve for x
    x = 2,263,654.28/1,808.57
  6. Step 6: Final answer
    x = 1,251.63

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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.