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Finding the Third Proportional to 1,283 and 2,830

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Solution

The third proportional to 1,283 and 2,830 is: 6,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283 : 2,830 = 2,830 : x
  2. Step 2: Convert to fraction form
    1,283/2,830 = 2,830/x
  3. Step 3: Cross multiply
    1,283x = 2,830 × 2,830
  4. Step 4: Simplify right side
    1,283x = 8,008,900
  5. Step 5: Solve for x
    x = 8,008,900/1,283
  6. Step 6: Final answer
    x = 6,242.32

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.