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Finding the Third Proportional to 7,128 and 9,052

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Solution

The third proportional to 7,128 and 9,052 is: 11,495.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128 : 9,052 = 9,052 : x
  2. Step 2: Convert to fraction form
    7,128/9,052 = 9,052/x
  3. Step 3: Cross multiply
    7,128x = 9,052 × 9,052
  4. Step 4: Simplify right side
    7,128x = 81,938,704
  5. Step 5: Solve for x
    x = 81,938,704/7,128
  6. Step 6: Final answer
    x = 11,495.33

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.