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Finding the Third Proportional to 1,820.75 and 4,279.88

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Solution

The third proportional to 1,820.75 and 4,279.88 is: 10,060.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.75 : 4,279.88 = 4,279.88 : x
  2. Step 2: Convert to fraction form
    1,820.75/4,279.88 = 4,279.88/x
  3. Step 3: Cross multiply
    1,820.75x = 4,279.88 × 4,279.88
  4. Step 4: Simplify right side
    1,820.75x = 18,317,330.02
  5. Step 5: Solve for x
    x = 18,317,330.02/1,820.75
  6. Step 6: Final answer
    x = 10,060.32

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.