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Finding the Third Proportional to 2,572 and 4,282

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Solution

The third proportional to 2,572 and 4,282 is: 7,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572 : 4,282 = 4,282 : x
  2. Step 2: Convert to fraction form
    2,572/4,282 = 4,282/x
  3. Step 3: Cross multiply
    2,572x = 4,282 × 4,282
  4. Step 4: Simplify right side
    2,572x = 18,335,524
  5. Step 5: Solve for x
    x = 18,335,524/2,572
  6. Step 6: Final answer
    x = 7,128.90

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.