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Finding the Third Proportional to 1,820 and 3,955

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Solution

The third proportional to 1,820 and 3,955 is: 8,594.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820 : 3,955 = 3,955 : x
  2. Step 2: Convert to fraction form
    1,820/3,955 = 3,955/x
  3. Step 3: Cross multiply
    1,820x = 3,955 × 3,955
  4. Step 4: Simplify right side
    1,820x = 15,642,025
  5. Step 5: Solve for x
    x = 15,642,025/1,820
  6. Step 6: Final answer
    x = 8,594.52

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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.