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Finding the Third Proportional to 4,740 and 7,434.75

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Solution

The third proportional to 4,740 and 7,434.75 is: 11,661.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,740 : 7,434.75 = 7,434.75 : x
  2. Step 2: Convert to fraction form
    4,740/7,434.75 = 7,434.75/x
  3. Step 3: Cross multiply
    4,740x = 7,434.75 × 7,434.75
  4. Step 4: Simplify right side
    4,740x = 55,275,507.56
  5. Step 5: Solve for x
    x = 55,275,507.56/4,740
  6. Step 6: Final answer
    x = 11,661.50

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.