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Finding the Third Proportional to 3,386.81 and 8,619.75

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Solution

The third proportional to 3,386.81 and 8,619.75 is: 21,938.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.81 : 8,619.75 = 8,619.75 : x
  2. Step 2: Convert to fraction form
    3,386.81/8,619.75 = 8,619.75/x
  3. Step 3: Cross multiply
    3,386.81x = 8,619.75 × 8,619.75
  4. Step 4: Simplify right side
    3,386.81x = 74,300,090.06
  5. Step 5: Solve for x
    x = 74,300,090.06/3,386.81
  6. Step 6: Final answer
    x = 21,938.06

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Why These Related Problems?

These problems maintain the same ratio (2.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.