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Finding the Third Proportional to 1,298.75 and 2,029

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Solution

The third proportional to 1,298.75 and 2,029 is: 3,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.75 : 2,029 = 2,029 : x
  2. Step 2: Convert to fraction form
    1,298.75/2,029 = 2,029/x
  3. Step 3: Cross multiply
    1,298.75x = 2,029 × 2,029
  4. Step 4: Simplify right side
    1,298.75x = 4,116,841
  5. Step 5: Solve for x
    x = 4,116,841/1,298.75
  6. Step 6: Final answer
    x = 3,169.85

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.