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Finding the Third Proportional to 4,430 and 6,406

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Solution

The third proportional to 4,430 and 6,406 is: 9,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,430 : 6,406 = 6,406 : x
  2. Step 2: Convert to fraction form
    4,430/6,406 = 6,406/x
  3. Step 3: Cross multiply
    4,430x = 6,406 × 6,406
  4. Step 4: Simplify right side
    4,430x = 41,036,836
  5. Step 5: Solve for x
    x = 41,036,836/4,430
  6. Step 6: Final answer
    x = 9,263.39

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.