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Finding the Fourth Proportional to 2,689.03, 4,031.11 and 956.44

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Solution

The fourth proportional to 2,689.03, 4,031.11 and 956.44 is: 1,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.03 : 4,031.11 = 956.44 : x
  2. Step 2: Convert to fraction form
    2,689.03/4,031.11 = 956.44/x
  3. Step 3: Cross multiply
    2,689.03x = 4,031.11 × 956.44
  4. Step 4: Simplify right side
    2,689.03x = 3,855,505.97
  5. Step 5: Solve for x
    x = 3,855,505.97/2,689.03
  6. Step 6: Final answer
    x = 1,433.79

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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.