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Finding the Third Proportional to 3,140.75 and 4,900.75

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Solution

The third proportional to 3,140.75 and 4,900.75 is: 7,647.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.75 : 4,900.75 = 4,900.75 : x
  2. Step 2: Convert to fraction form
    3,140.75/4,900.75 = 4,900.75/x
  3. Step 3: Cross multiply
    3,140.75x = 4,900.75 × 4,900.75
  4. Step 4: Simplify right side
    3,140.75x = 24,017,350.56
  5. Step 5: Solve for x
    x = 24,017,350.56/3,140.75
  6. Step 6: Final answer
    x = 7,647.01

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.