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Finding the Third Proportional to 2,985 and 4,875

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Solution

The third proportional to 2,985 and 4,875 is: 7,961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985 : 4,875 = 4,875 : x
  2. Step 2: Convert to fraction form
    2,985/4,875 = 4,875/x
  3. Step 3: Cross multiply
    2,985x = 4,875 × 4,875
  4. Step 4: Simplify right side
    2,985x = 23,765,625
  5. Step 5: Solve for x
    x = 23,765,625/2,985
  6. Step 6: Final answer
    x = 7,961.68

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.