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Finding the Third Proportional to 5,406 and 8,484

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Solution

The third proportional to 5,406 and 8,484 is: 13,314.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406 : 8,484 = 8,484 : x
  2. Step 2: Convert to fraction form
    5,406/8,484 = 8,484/x
  3. Step 3: Cross multiply
    5,406x = 8,484 × 8,484
  4. Step 4: Simplify right side
    5,406x = 71,978,256
  5. Step 5: Solve for x
    x = 71,978,256/5,406
  6. Step 6: Final answer
    x = 13,314.51

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These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.