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Finding the Third Proportional to 5,485 and 8,495

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Solution

The third proportional to 5,485 and 8,495 is: 13,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485 : 8,495 = 8,495 : x
  2. Step 2: Convert to fraction form
    5,485/8,495 = 8,495/x
  3. Step 3: Cross multiply
    5,485x = 8,495 × 8,495
  4. Step 4: Simplify right side
    5,485x = 72,165,025
  5. Step 5: Solve for x
    x = 72,165,025/5,485
  6. Step 6: Final answer
    x = 13,156.80

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.