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Finding the Fourth Proportional to 2,689.11, 4,032.08 and 814.44

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Solution

The fourth proportional to 2,689.11, 4,032.08 and 814.44 is: 1,221.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.11 : 4,032.08 = 814.44 : x
  2. Step 2: Convert to fraction form
    2,689.11/4,032.08 = 814.44/x
  3. Step 3: Cross multiply
    2,689.11x = 4,032.08 × 814.44
  4. Step 4: Simplify right side
    2,689.11x = 3,283,883.16
  5. Step 5: Solve for x
    x = 3,283,883.16/2,689.11
  6. Step 6: Final answer
    x = 1,221.18

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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.