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Finding the Third Proportional to 4,868.50 and 7,145.75

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Solution

The third proportional to 4,868.50 and 7,145.75 is: 10,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,868.50 : 7,145.75 = 7,145.75 : x
  2. Step 2: Convert to fraction form
    4,868.50/7,145.75 = 7,145.75/x
  3. Step 3: Cross multiply
    4,868.50x = 7,145.75 × 7,145.75
  4. Step 4: Simplify right side
    4,868.50x = 51,061,743.06
  5. Step 5: Solve for x
    x = 51,061,743.06/4,868.50
  6. Step 6: Final answer
    x = 10,488.19

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.