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Finding the Third Proportional to 2,389.50 and 3,579.19

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Solution

The third proportional to 2,389.50 and 3,579.19 is: 5,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.50 : 3,579.19 = 3,579.19 : x
  2. Step 2: Convert to fraction form
    2,389.50/3,579.19 = 3,579.19/x
  3. Step 3: Cross multiply
    2,389.50x = 3,579.19 × 3,579.19
  4. Step 4: Simplify right side
    2,389.50x = 12,810,583.16
  5. Step 5: Solve for x
    x = 12,810,583.16/2,389.50
  6. Step 6: Final answer
    x = 5,361.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.