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Finding the Fourth Proportional to 2,691.63, 4,034.09 and 958.35

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Solution

The fourth proportional to 2,691.63, 4,034.09 and 958.35 is: 1,436.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.63 : 4,034.09 = 958.35 : x
  2. Step 2: Convert to fraction form
    2,691.63/4,034.09 = 958.35/x
  3. Step 3: Cross multiply
    2,691.63x = 4,034.09 × 958.35
  4. Step 4: Simplify right side
    2,691.63x = 3,866,065.36
  5. Step 5: Solve for x
    x = 3,866,065.36/2,691.63
  6. Step 6: Final answer
    x = 1,436.33

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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.