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Finding the Third Proportional to 2,158.31 and 2,763.84

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Solution

The third proportional to 2,158.31 and 2,763.84 is: 3,539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.31 : 2,763.84 = 2,763.84 : x
  2. Step 2: Convert to fraction form
    2,158.31/2,763.84 = 2,763.84/x
  3. Step 3: Cross multiply
    2,158.31x = 2,763.84 × 2,763.84
  4. Step 4: Simplify right side
    2,158.31x = 7,638,832.27
  5. Step 5: Solve for x
    x = 7,638,832.27/2,158.31
  6. Step 6: Final answer
    x = 3,539.26

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.