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Finding the Third Proportional to 1,281.30 and 2,759.13

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Solution

The third proportional to 1,281.30 and 2,759.13 is: 5,941.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.30 : 2,759.13 = 2,759.13 : x
  2. Step 2: Convert to fraction form
    1,281.30/2,759.13 = 2,759.13/x
  3. Step 3: Cross multiply
    1,281.30x = 2,759.13 × 2,759.13
  4. Step 4: Simplify right side
    1,281.30x = 7,612,813.88
  5. Step 5: Solve for x
    x = 7,612,813.88/1,281.30
  6. Step 6: Final answer
    x = 5,941.45

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.