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Finding the Fourth Proportional to 1,834.56, 2,751.78 and 1,218.12

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Solution

The fourth proportional to 1,834.56, 2,751.78 and 1,218.12 is: 1,827.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,834.56 : 2,751.78 = 1,218.12 : x
  2. Step 2: Convert to fraction form
    1,834.56/2,751.78 = 1,218.12/x
  3. Step 3: Cross multiply
    1,834.56x = 2,751.78 × 1,218.12
  4. Step 4: Simplify right side
    1,834.56x = 3,351,998.25
  5. Step 5: Solve for x
    x = 3,351,998.25/1,834.56
  6. Step 6: Final answer
    x = 1,827.14

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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.