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Finding the Third Proportional to 7,487.81 and 17,805.75

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Solution

The third proportional to 7,487.81 and 17,805.75 is: 42,341.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.81 : 17,805.75 = 17,805.75 : x
  2. Step 2: Convert to fraction form
    7,487.81/17,805.75 = 17,805.75/x
  3. Step 3: Cross multiply
    7,487.81x = 17,805.75 × 17,805.75
  4. Step 4: Simplify right side
    7,487.81x = 317,044,733.06
  5. Step 5: Solve for x
    x = 317,044,733.06/7,487.81
  6. Step 6: Final answer
    x = 42,341.44

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Why These Related Problems?

These problems maintain the same ratio (2.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.