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Finding the Third Proportional to 5,135 and 7,590

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Solution

The third proportional to 5,135 and 7,590 is: 11,218.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135 : 7,590 = 7,590 : x
  2. Step 2: Convert to fraction form
    5,135/7,590 = 7,590/x
  3. Step 3: Cross multiply
    5,135x = 7,590 × 7,590
  4. Step 4: Simplify right side
    5,135x = 57,608,100
  5. Step 5: Solve for x
    x = 57,608,100/5,135
  6. Step 6: Final answer
    x = 11,218.71

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.