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Finding the Third Proportional to 2,643 and 5,673

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Solution

The third proportional to 2,643 and 5,673 is: 12,176.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643 : 5,673 = 5,673 : x
  2. Step 2: Convert to fraction form
    2,643/5,673 = 5,673/x
  3. Step 3: Cross multiply
    2,643x = 5,673 × 5,673
  4. Step 4: Simplify right side
    2,643x = 32,182,929
  5. Step 5: Solve for x
    x = 32,182,929/2,643
  6. Step 6: Final answer
    x = 12,176.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.