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Finding the Fourth Proportional to 8,915.81, 13,375.06 and 3,653.64

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Solution

The fourth proportional to 8,915.81, 13,375.06 and 3,653.64 is: 5,481.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.81 : 13,375.06 = 3,653.64 : x
  2. Step 2: Convert to fraction form
    8,915.81/13,375.06 = 3,653.64/x
  3. Step 3: Cross multiply
    8,915.81x = 13,375.06 × 3,653.64
  4. Step 4: Simplify right side
    8,915.81x = 48,867,645.08
  5. Step 5: Solve for x
    x = 48,867,645.08/8,915.81
  6. Step 6: Final answer
    x = 5,481.01

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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.