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Finding the Third Proportional to 2,120 and 3,058

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Solution

The third proportional to 2,120 and 3,058 is: 4,411.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120 : 3,058 = 3,058 : x
  2. Step 2: Convert to fraction form
    2,120/3,058 = 3,058/x
  3. Step 3: Cross multiply
    2,120x = 3,058 × 3,058
  4. Step 4: Simplify right side
    2,120x = 9,351,364
  5. Step 5: Solve for x
    x = 9,351,364/2,120
  6. Step 6: Final answer
    x = 4,411.02

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.