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Finding the Third Proportional to 7,881.75 and 17,140.50

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Solution

The third proportional to 7,881.75 and 17,140.50 is: 37,275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.75 : 17,140.50 = 17,140.50 : x
  2. Step 2: Convert to fraction form
    7,881.75/17,140.50 = 17,140.50/x
  3. Step 3: Cross multiply
    7,881.75x = 17,140.50 × 17,140.50
  4. Step 4: Simplify right side
    7,881.75x = 293,796,740.25
  5. Step 5: Solve for x
    x = 293,796,740.25/7,881.75
  6. Step 6: Final answer
    x = 37,275.57

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.