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Finding the Third Proportional to 2,645 and 4,347

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Solution

The third proportional to 2,645 and 4,347 is: 7,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645 : 4,347 = 4,347 : x
  2. Step 2: Convert to fraction form
    2,645/4,347 = 4,347/x
  3. Step 3: Cross multiply
    2,645x = 4,347 × 4,347
  4. Step 4: Simplify right side
    2,645x = 18,896,409
  5. Step 5: Solve for x
    x = 18,896,409/2,645
  6. Step 6: Final answer
    x = 7,144.20

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.