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Finding the Third Proportional to 7,798 and 11,929

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Solution

The third proportional to 7,798 and 11,929 is: 18,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798 : 11,929 = 11,929 : x
  2. Step 2: Convert to fraction form
    7,798/11,929 = 11,929/x
  3. Step 3: Cross multiply
    7,798x = 11,929 × 11,929
  4. Step 4: Simplify right side
    7,798x = 142,301,041
  5. Step 5: Solve for x
    x = 142,301,041/7,798
  6. Step 6: Final answer
    x = 18,248.40

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.