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Finding the Fourth Proportional to 8,872.84, 13,316.78 and 3,611.74

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Solution

The fourth proportional to 8,872.84, 13,316.78 and 3,611.74 is: 5,420.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.84 : 13,316.78 = 3,611.74 : x
  2. Step 2: Convert to fraction form
    8,872.84/13,316.78 = 3,611.74/x
  3. Step 3: Cross multiply
    8,872.84x = 13,316.78 × 3,611.74
  4. Step 4: Simplify right side
    8,872.84x = 48,096,747.00
  5. Step 5: Solve for x
    x = 48,096,747.00/8,872.84
  6. Step 6: Final answer
    x = 5,420.67

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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.