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Finding the Third Proportional to 7,281 and 15,871

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Solution

The third proportional to 7,281 and 15,871 is: 34,595.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281 : 15,871 = 15,871 : x
  2. Step 2: Convert to fraction form
    7,281/15,871 = 15,871/x
  3. Step 3: Cross multiply
    7,281x = 15,871 × 15,871
  4. Step 4: Simplify right side
    7,281x = 251,888,641
  5. Step 5: Solve for x
    x = 251,888,641/7,281
  6. Step 6: Final answer
    x = 34,595.34

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.