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Finding the Fourth Proportional to 3,584.53, 5,376.33 and 987.67

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Solution

The fourth proportional to 3,584.53, 5,376.33 and 987.67 is: 1,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,584.53 : 5,376.33 = 987.67 : x
  2. Step 2: Convert to fraction form
    3,584.53/5,376.33 = 987.67/x
  3. Step 3: Cross multiply
    3,584.53x = 5,376.33 × 987.67
  4. Step 4: Simplify right side
    3,584.53x = 5,310,039.85
  5. Step 5: Solve for x
    x = 5,310,039.85/3,584.53
  6. Step 6: Final answer
    x = 1,481.38

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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.