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Finding the Third Proportional to 4,929 and 7,641.50

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Solution

The third proportional to 4,929 and 7,641.50 is: 11,846.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,929 : 7,641.50 = 7,641.50 : x
  2. Step 2: Convert to fraction form
    4,929/7,641.50 = 7,641.50/x
  3. Step 3: Cross multiply
    4,929x = 7,641.50 × 7,641.50
  4. Step 4: Simplify right side
    4,929x = 58,392,522.25
  5. Step 5: Solve for x
    x = 58,392,522.25/4,929
  6. Step 6: Final answer
    x = 11,846.73

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.