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Finding the Third Proportional to 5,490 and 11,460

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Solution

The third proportional to 5,490 and 11,460 is: 23,921.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490 : 11,460 = 11,460 : x
  2. Step 2: Convert to fraction form
    5,490/11,460 = 11,460/x
  3. Step 3: Cross multiply
    5,490x = 11,460 × 11,460
  4. Step 4: Simplify right side
    5,490x = 131,331,600
  5. Step 5: Solve for x
    x = 131,331,600/5,490
  6. Step 6: Final answer
    x = 23,921.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.