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Finding the Third Proportional to 6,518 and 7,190

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Solution

The third proportional to 6,518 and 7,190 is: 7,931.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518 : 7,190 = 7,190 : x
  2. Step 2: Convert to fraction form
    6,518/7,190 = 7,190/x
  3. Step 3: Cross multiply
    6,518x = 7,190 × 7,190
  4. Step 4: Simplify right side
    6,518x = 51,696,100
  5. Step 5: Solve for x
    x = 51,696,100/6,518
  6. Step 6: Final answer
    x = 7,931.28

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These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.