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Finding the Third Proportional to 3,518.50 and 6,518

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Solution

The third proportional to 3,518.50 and 6,518 is: 12,074.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.50 : 6,518 = 6,518 : x
  2. Step 2: Convert to fraction form
    3,518.50/6,518 = 6,518/x
  3. Step 3: Cross multiply
    3,518.50x = 6,518 × 6,518
  4. Step 4: Simplify right side
    3,518.50x = 42,484,324
  5. Step 5: Solve for x
    x = 42,484,324/3,518.50
  6. Step 6: Final answer
    x = 12,074.56

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Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.