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Finding the Third Proportional to 5,490 and 11,904

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Solution

The third proportional to 5,490 and 11,904 is: 25,811.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490 : 11,904 = 11,904 : x
  2. Step 2: Convert to fraction form
    5,490/11,904 = 11,904/x
  3. Step 3: Cross multiply
    5,490x = 11,904 × 11,904
  4. Step 4: Simplify right side
    5,490x = 141,705,216
  5. Step 5: Solve for x
    x = 141,705,216/5,490
  6. Step 6: Final answer
    x = 25,811.51

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.