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Finding the Third Proportional to 3,420.56 and 4,765.50

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Solution

The third proportional to 3,420.56 and 4,765.50 is: 6,639.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.56 : 4,765.50 = 4,765.50 : x
  2. Step 2: Convert to fraction form
    3,420.56/4,765.50 = 4,765.50/x
  3. Step 3: Cross multiply
    3,420.56x = 4,765.50 × 4,765.50
  4. Step 4: Simplify right side
    3,420.56x = 22,709,990.25
  5. Step 5: Solve for x
    x = 22,709,990.25/3,420.56
  6. Step 6: Final answer
    x = 6,639.26

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.