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Finding the Fourth Proportional to 2,177.62, 3,265.08 and 716.38

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Solution

The fourth proportional to 2,177.62, 3,265.08 and 716.38 is: 1,074.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.62 : 3,265.08 = 716.38 : x
  2. Step 2: Convert to fraction form
    2,177.62/3,265.08 = 716.38/x
  3. Step 3: Cross multiply
    2,177.62x = 3,265.08 × 716.38
  4. Step 4: Simplify right side
    2,177.62x = 2,339,027.16
  5. Step 5: Solve for x
    x = 2,339,027.16/2,177.62
  6. Step 6: Final answer
    x = 1,074.12

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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.