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Finding the Fourth Proportional to 3,684, 5,526 and 1,086.87

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Solution

The fourth proportional to 3,684, 5,526 and 1,086.87 is: 1,630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,684 : 5,526 = 1,086.87 : x
  2. Step 2: Convert to fraction form
    3,684/5,526 = 1,086.87/x
  3. Step 3: Cross multiply
    3,684x = 5,526 × 1,086.87
  4. Step 4: Simplify right side
    3,684x = 6,006,043.62
  5. Step 5: Solve for x
    x = 6,006,043.62/3,684
  6. Step 6: Final answer
    x = 1,630.31

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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.