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Finding the Fourth Proportional to 3,584.61, 5,376.78 and 1,636.80

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Solution

The fourth proportional to 3,584.61, 5,376.78 and 1,636.80 is: 2,455.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,584.61 : 5,376.78 = 1,636.80 : x
  2. Step 2: Convert to fraction form
    3,584.61/5,376.78 = 1,636.80/x
  3. Step 3: Cross multiply
    3,584.61x = 5,376.78 × 1,636.80
  4. Step 4: Simplify right side
    3,584.61x = 8,800,713.50
  5. Step 5: Solve for x
    x = 8,800,713.50/3,584.61
  6. Step 6: Final answer
    x = 2,455.14

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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.