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Finding the Third Proportional to 4,245 and 7,581

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Solution

The third proportional to 4,245 and 7,581 is: 13,538.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,245 : 7,581 = 7,581 : x
  2. Step 2: Convert to fraction form
    4,245/7,581 = 7,581/x
  3. Step 3: Cross multiply
    4,245x = 7,581 × 7,581
  4. Step 4: Simplify right side
    4,245x = 57,471,561
  5. Step 5: Solve for x
    x = 57,471,561/4,245
  6. Step 6: Final answer
    x = 13,538.65

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.