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Finding the Third Proportional to 3,931.19 and 8,444.72

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Solution

The third proportional to 3,931.19 and 8,444.72 is: 18,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.19 : 8,444.72 = 8,444.72 : x
  2. Step 2: Convert to fraction form
    3,931.19/8,444.72 = 8,444.72/x
  3. Step 3: Cross multiply
    3,931.19x = 8,444.72 × 8,444.72
  4. Step 4: Simplify right side
    3,931.19x = 71,313,373.73
  5. Step 5: Solve for x
    x = 71,313,373.73/3,931.19
  6. Step 6: Final answer
    x = 18,140.41

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.