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Finding the Third Proportional to 7,111 and 9,946

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Solution

The third proportional to 7,111 and 9,946 is: 13,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111 : 9,946 = 9,946 : x
  2. Step 2: Convert to fraction form
    7,111/9,946 = 9,946/x
  3. Step 3: Cross multiply
    7,111x = 9,946 × 9,946
  4. Step 4: Simplify right side
    7,111x = 98,922,916
  5. Step 5: Solve for x
    x = 98,922,916/7,111
  6. Step 6: Final answer
    x = 13,911.25

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.