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Finding the Third Proportional to 4,115.81 and 6,409.13

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Solution

The third proportional to 4,115.81 and 6,409.13 is: 9,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.81 : 6,409.13 = 6,409.13 : x
  2. Step 2: Convert to fraction form
    4,115.81/6,409.13 = 6,409.13/x
  3. Step 3: Cross multiply
    4,115.81x = 6,409.13 × 6,409.13
  4. Step 4: Simplify right side
    4,115.81x = 41,076,883.27
  5. Step 5: Solve for x
    x = 41,076,883.27/4,115.81
  6. Step 6: Final answer
    x = 9,980.26

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.