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Finding the Fourth Proportional to 7,177.64, 10,768.62 and 2,561

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Solution

The fourth proportional to 7,177.64, 10,768.62 and 2,561 is: 3,842.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.64 : 10,768.62 = 2,561 : x
  2. Step 2: Convert to fraction form
    7,177.64/10,768.62 = 2,561/x
  3. Step 3: Cross multiply
    7,177.64x = 10,768.62 × 2,561
  4. Step 4: Simplify right side
    7,177.64x = 27,578,435.82
  5. Step 5: Solve for x
    x = 27,578,435.82/7,177.64
  6. Step 6: Final answer
    x = 3,842.27

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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.