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Finding the Third Proportional to 1,264.63 and 1,979.63

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Solution

The third proportional to 1,264.63 and 1,979.63 is: 3,098.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.63 : 1,979.63 = 1,979.63 : x
  2. Step 2: Convert to fraction form
    1,264.63/1,979.63 = 1,979.63/x
  3. Step 3: Cross multiply
    1,264.63x = 1,979.63 × 1,979.63
  4. Step 4: Simplify right side
    1,264.63x = 3,918,915.14
  5. Step 5: Solve for x
    x = 3,918,915.14/1,264.63
  6. Step 6: Final answer
    x = 3,098.88

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.