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Finding the Third Proportional to 4,134.80 and 7,842.45

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Solution

The third proportional to 4,134.80 and 7,842.45 is: 14,874.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,134.80 : 7,842.45 = 7,842.45 : x
  2. Step 2: Convert to fraction form
    4,134.80/7,842.45 = 7,842.45/x
  3. Step 3: Cross multiply
    4,134.80x = 7,842.45 × 7,842.45
  4. Step 4: Simplify right side
    4,134.80x = 61,503,948.48
  5. Step 5: Solve for x
    x = 61,503,948.48/4,134.80
  6. Step 6: Final answer
    x = 14,874.72

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.