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Finding the Third Proportional to 3,138.19 and 4,707.56

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Solution

The third proportional to 3,138.19 and 4,707.56 is: 7,061.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.19 : 4,707.56 = 4,707.56 : x
  2. Step 2: Convert to fraction form
    3,138.19/4,707.56 = 4,707.56/x
  3. Step 3: Cross multiply
    3,138.19x = 4,707.56 × 4,707.56
  4. Step 4: Simplify right side
    3,138.19x = 22,161,144.69
  5. Step 5: Solve for x
    x = 22,161,144.69/3,138.19
  6. Step 6: Final answer
    x = 7,061.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.