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Finding the Third Proportional to 1,558 and 2,408

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Solution

The third proportional to 1,558 and 2,408 is: 3,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558 : 2,408 = 2,408 : x
  2. Step 2: Convert to fraction form
    1,558/2,408 = 2,408/x
  3. Step 3: Cross multiply
    1,558x = 2,408 × 2,408
  4. Step 4: Simplify right side
    1,558x = 5,798,464
  5. Step 5: Solve for x
    x = 5,798,464/1,558
  6. Step 6: Final answer
    x = 3,721.74

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.