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Finding the Third Proportional to 3,180 and 3,516

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Solution

The third proportional to 3,180 and 3,516 is: 3,887.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180 : 3,516 = 3,516 : x
  2. Step 2: Convert to fraction form
    3,180/3,516 = 3,516/x
  3. Step 3: Cross multiply
    3,180x = 3,516 × 3,516
  4. Step 4: Simplify right side
    3,180x = 12,362,256
  5. Step 5: Solve for x
    x = 12,362,256/3,180
  6. Step 6: Final answer
    x = 3,887.50

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.