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Finding the Third Proportional to 5,640 and 10,236

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Solution

The third proportional to 5,640 and 10,236 is: 18,577.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640 : 10,236 = 10,236 : x
  2. Step 2: Convert to fraction form
    5,640/10,236 = 10,236/x
  3. Step 3: Cross multiply
    5,640x = 10,236 × 10,236
  4. Step 4: Simplify right side
    5,640x = 104,775,696
  5. Step 5: Solve for x
    x = 104,775,696/5,640
  6. Step 6: Final answer
    x = 18,577.25

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.