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Finding the Third Proportional to 6,890 and 11,404

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Solution

The third proportional to 6,890 and 11,404 is: 18,875.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890 : 11,404 = 11,404 : x
  2. Step 2: Convert to fraction form
    6,890/11,404 = 11,404/x
  3. Step 3: Cross multiply
    6,890x = 11,404 × 11,404
  4. Step 4: Simplify right side
    6,890x = 130,051,216
  5. Step 5: Solve for x
    x = 130,051,216/6,890
  6. Step 6: Final answer
    x = 18,875.36

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.