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Finding the Third Proportional to 3,690.56 and 6,120.56

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Solution

The third proportional to 3,690.56 and 6,120.56 is: 10,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.56 : 6,120.56 = 6,120.56 : x
  2. Step 2: Convert to fraction form
    3,690.56/6,120.56 = 6,120.56/x
  3. Step 3: Cross multiply
    3,690.56x = 6,120.56 × 6,120.56
  4. Step 4: Simplify right side
    3,690.56x = 37,461,285.32
  5. Step 5: Solve for x
    x = 37,461,285.32/3,690.56
  6. Step 6: Final answer
    x = 10,150.56

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.