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Finding the Third Proportional to 5,720 and 13,664

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Solution

The third proportional to 5,720 and 13,664 is: 32,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720 : 13,664 = 13,664 : x
  2. Step 2: Convert to fraction form
    5,720/13,664 = 13,664/x
  3. Step 3: Cross multiply
    5,720x = 13,664 × 13,664
  4. Step 4: Simplify right side
    5,720x = 186,704,896
  5. Step 5: Solve for x
    x = 186,704,896/5,720
  6. Step 6: Final answer
    x = 32,640.72

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.