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Finding the Third Proportional to 8,311 and 19,220

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Solution

The third proportional to 8,311 and 19,220 is: 44,448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311 : 19,220 = 19,220 : x
  2. Step 2: Convert to fraction form
    8,311/19,220 = 19,220/x
  3. Step 3: Cross multiply
    8,311x = 19,220 × 19,220
  4. Step 4: Simplify right side
    8,311x = 369,408,400
  5. Step 5: Solve for x
    x = 369,408,400/8,311
  6. Step 6: Final answer
    x = 44,448.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.