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Finding the Third Proportional to 4,179 and 8,155.50

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Solution

The third proportional to 4,179 and 8,155.50 is: 15,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,179 : 8,155.50 = 8,155.50 : x
  2. Step 2: Convert to fraction form
    4,179/8,155.50 = 8,155.50/x
  3. Step 3: Cross multiply
    4,179x = 8,155.50 × 8,155.50
  4. Step 4: Simplify right side
    4,179x = 66,512,180.25
  5. Step 5: Solve for x
    x = 66,512,180.25/4,179
  6. Step 6: Final answer
    x = 15,915.81

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.