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Finding the Third Proportional to 3,890,961.56 and 6,215,871.66

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Solution

The third proportional to 3,890,961.56 and 6,215,871.66 is: 9,929,951.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890,961.56 : 6,215,871.66 = 6,215,871.66 : x
  2. Step 2: Convert to fraction form
    3,890,961.56/6,215,871.66 = 6,215,871.66/x
  3. Step 3: Cross multiply
    3,890,961.56x = 6,215,871.66 × 6,215,871.66
  4. Step 4: Simplify right side
    3,890,961.56x = 38,637,060,446,972.12
  5. Step 5: Solve for x
    x = 38,637,060,446,972.12/3,890,961.56
  6. Step 6: Final answer
    x = 9,929,951.72

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.