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Finding the Third Proportional to 3,929.63 and 8,313.19

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Solution

The third proportional to 3,929.63 and 8,313.19 is: 17,586.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.63 : 8,313.19 = 8,313.19 : x
  2. Step 2: Convert to fraction form
    3,929.63/8,313.19 = 8,313.19/x
  3. Step 3: Cross multiply
    3,929.63x = 8,313.19 × 8,313.19
  4. Step 4: Simplify right side
    3,929.63x = 69,109,086.41
  5. Step 5: Solve for x
    x = 69,109,086.41/3,929.63
  6. Step 6: Final answer
    x = 17,586.69

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.