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Finding the Fourth Proportional to 2,903, 4,006.14 and 1,661

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Solution

The fourth proportional to 2,903, 4,006.14 and 1,661 is: 2,292.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903 : 4,006.14 = 1,661 : x
  2. Step 2: Convert to fraction form
    2,903/4,006.14 = 1,661/x
  3. Step 3: Cross multiply
    2,903x = 4,006.14 × 1,661
  4. Step 4: Simplify right side
    2,903x = 6,654,198.54
  5. Step 5: Solve for x
    x = 6,654,198.54/2,903
  6. Step 6: Final answer
    x = 2,292.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.