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Finding the Third Proportional to 6,810 and 10,702.50

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Solution

The third proportional to 6,810 and 10,702.50 is: 16,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,810 : 10,702.50 = 10,702.50 : x
  2. Step 2: Convert to fraction form
    6,810/10,702.50 = 10,702.50/x
  3. Step 3: Cross multiply
    6,810x = 10,702.50 × 10,702.50
  4. Step 4: Simplify right side
    6,810x = 114,543,506.25
  5. Step 5: Solve for x
    x = 114,543,506.25/6,810
  6. Step 6: Final answer
    x = 16,819.90

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.