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Finding the Third Proportional to 8,870 and 11,658

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Solution

The third proportional to 8,870 and 11,658 is: 15,322.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870 : 11,658 = 11,658 : x
  2. Step 2: Convert to fraction form
    8,870/11,658 = 11,658/x
  3. Step 3: Cross multiply
    8,870x = 11,658 × 11,658
  4. Step 4: Simplify right side
    8,870x = 135,908,964
  5. Step 5: Solve for x
    x = 135,908,964/8,870
  6. Step 6: Final answer
    x = 15,322.32

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.