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Finding the Third Proportional to 4,815 and 7,390.69

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Solution

The third proportional to 4,815 and 7,390.69 is: 11,344.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815 : 7,390.69 = 7,390.69 : x
  2. Step 2: Convert to fraction form
    4,815/7,390.69 = 7,390.69/x
  3. Step 3: Cross multiply
    4,815x = 7,390.69 × 7,390.69
  4. Step 4: Simplify right side
    4,815x = 54,622,261.72
  5. Step 5: Solve for x
    x = 54,622,261.72/4,815
  6. Step 6: Final answer
    x = 11,344.19

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.