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Finding the Third Proportional to 1,515.09 and 2,339.30

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Solution

The third proportional to 1,515.09 and 2,339.30 is: 3,611.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.09 : 2,339.30 = 2,339.30 : x
  2. Step 2: Convert to fraction form
    1,515.09/2,339.30 = 2,339.30/x
  3. Step 3: Cross multiply
    1,515.09x = 2,339.30 × 2,339.30
  4. Step 4: Simplify right side
    1,515.09x = 5,472,309.87
  5. Step 5: Solve for x
    x = 5,472,309.87/1,515.09
  6. Step 6: Final answer
    x = 3,611.86

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.