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Finding the Fourth Proportional to 6,643.68, 9,966.36 and 2,750.82

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Solution

The fourth proportional to 6,643.68, 9,966.36 and 2,750.82 is: 4,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643.68 : 9,966.36 = 2,750.82 : x
  2. Step 2: Convert to fraction form
    6,643.68/9,966.36 = 2,750.82/x
  3. Step 3: Cross multiply
    6,643.68x = 9,966.36 × 2,750.82
  4. Step 4: Simplify right side
    6,643.68x = 27,415,662.42
  5. Step 5: Solve for x
    x = 27,415,662.42/6,643.68
  6. Step 6: Final answer
    x = 4,126.58

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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.