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Finding the Third Proportional to 2,880 and 4,761

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Solution

The third proportional to 2,880 and 4,761 is: 7,870.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880 : 4,761 = 4,761 : x
  2. Step 2: Convert to fraction form
    2,880/4,761 = 4,761/x
  3. Step 3: Cross multiply
    2,880x = 4,761 × 4,761
  4. Step 4: Simplify right side
    2,880x = 22,667,121
  5. Step 5: Solve for x
    x = 22,667,121/2,880
  6. Step 6: Final answer
    x = 7,870.53

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.