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Finding the Third Proportional to 7,120.50 and 11,054

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Solution

The third proportional to 7,120.50 and 11,054 is: 17,160.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.50 : 11,054 = 11,054 : x
  2. Step 2: Convert to fraction form
    7,120.50/11,054 = 11,054/x
  3. Step 3: Cross multiply
    7,120.50x = 11,054 × 11,054
  4. Step 4: Simplify right side
    7,120.50x = 122,190,916
  5. Step 5: Solve for x
    x = 122,190,916/7,120.50
  6. Step 6: Final answer
    x = 17,160.44

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.