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Finding the Third Proportional to 3,512 and 8,130.50

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Solution

The third proportional to 3,512 and 8,130.50 is: 18,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512 : 8,130.50 = 8,130.50 : x
  2. Step 2: Convert to fraction form
    3,512/8,130.50 = 8,130.50/x
  3. Step 3: Cross multiply
    3,512x = 8,130.50 × 8,130.50
  4. Step 4: Simplify right side
    3,512x = 66,105,030.25
  5. Step 5: Solve for x
    x = 66,105,030.25/3,512
  6. Step 6: Final answer
    x = 18,822.62

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.