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Finding the Third Proportional to 1,020.50 and 2,210.75

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Solution

The third proportional to 1,020.50 and 2,210.75 is: 4,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.50 : 2,210.75 = 2,210.75 : x
  2. Step 2: Convert to fraction form
    1,020.50/2,210.75 = 2,210.75/x
  3. Step 3: Cross multiply
    1,020.50x = 2,210.75 × 2,210.75
  4. Step 4: Simplify right side
    1,020.50x = 4,887,415.56
  5. Step 5: Solve for x
    x = 4,887,415.56/1,020.50
  6. Step 6: Final answer
    x = 4,789.24

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.