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Finding the Third Proportional to 3,145 and 4,719

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Solution

The third proportional to 3,145 and 4,719 is: 7,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145 : 4,719 = 4,719 : x
  2. Step 2: Convert to fraction form
    3,145/4,719 = 4,719/x
  3. Step 3: Cross multiply
    3,145x = 4,719 × 4,719
  4. Step 4: Simplify right side
    3,145x = 22,268,961
  5. Step 5: Solve for x
    x = 22,268,961/3,145
  6. Step 6: Final answer
    x = 7,080.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.