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Finding the Third Proportional to 4,747 and 7,185.50

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Solution

The third proportional to 4,747 and 7,185.50 is: 10,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747 : 7,185.50 = 7,185.50 : x
  2. Step 2: Convert to fraction form
    4,747/7,185.50 = 7,185.50/x
  3. Step 3: Cross multiply
    4,747x = 7,185.50 × 7,185.50
  4. Step 4: Simplify right side
    4,747x = 51,631,410.25
  5. Step 5: Solve for x
    x = 51,631,410.25/4,747
  6. Step 6: Final answer
    x = 10,876.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.