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Finding the Third Proportional to 1,612.13 and 3,872.81

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Solution

The third proportional to 1,612.13 and 3,872.81 is: 9,303.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.13 : 3,872.81 = 3,872.81 : x
  2. Step 2: Convert to fraction form
    1,612.13/3,872.81 = 3,872.81/x
  3. Step 3: Cross multiply
    1,612.13x = 3,872.81 × 3,872.81
  4. Step 4: Simplify right side
    1,612.13x = 14,998,676.66
  5. Step 5: Solve for x
    x = 14,998,676.66/1,612.13
  6. Step 6: Final answer
    x = 9,303.67

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.