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Finding the Third Proportional to 2,143.50 and 4,346.63

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Solution

The third proportional to 2,143.50 and 4,346.63 is: 8,814.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.50 : 4,346.63 = 4,346.63 : x
  2. Step 2: Convert to fraction form
    2,143.50/4,346.63 = 4,346.63/x
  3. Step 3: Cross multiply
    2,143.50x = 4,346.63 × 4,346.63
  4. Step 4: Simplify right side
    2,143.50x = 18,893,148.89
  5. Step 5: Solve for x
    x = 18,893,148.89/2,143.50
  6. Step 6: Final answer
    x = 8,814.16

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.