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Finding the Fourth Proportional to 6,671.28, 9,206.22 and 3,687

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Solution

The fourth proportional to 6,671.28, 9,206.22 and 3,687 is: 5,087.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.28 : 9,206.22 = 3,687 : x
  2. Step 2: Convert to fraction form
    6,671.28/9,206.22 = 3,687/x
  3. Step 3: Cross multiply
    6,671.28x = 9,206.22 × 3,687
  4. Step 4: Simplify right side
    6,671.28x = 33,943,333.14
  5. Step 5: Solve for x
    x = 33,943,333.14/6,671.28
  6. Step 6: Final answer
    x = 5,087.98

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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.