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Finding the Third Proportional to 2,515 and 4,709

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Solution

The third proportional to 2,515 and 4,709 is: 8,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515 : 4,709 = 4,709 : x
  2. Step 2: Convert to fraction form
    2,515/4,709 = 4,709/x
  3. Step 3: Cross multiply
    2,515x = 4,709 × 4,709
  4. Step 4: Simplify right side
    2,515x = 22,174,681
  5. Step 5: Solve for x
    x = 22,174,681/2,515
  6. Step 6: Final answer
    x = 8,816.97

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.