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Finding the Third Proportional to 1,642.50 and 4,023

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Solution

The third proportional to 1,642.50 and 4,023 is: 9,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.50 : 4,023 = 4,023 : x
  2. Step 2: Convert to fraction form
    1,642.50/4,023 = 4,023/x
  3. Step 3: Cross multiply
    1,642.50x = 4,023 × 4,023
  4. Step 4: Simplify right side
    1,642.50x = 16,184,529
  5. Step 5: Solve for x
    x = 16,184,529/1,642.50
  6. Step 6: Final answer
    x = 9,853.59

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.