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Finding the Third Proportional to 3,681 and 7,726.50

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Solution

The third proportional to 3,681 and 7,726.50 is: 16,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681 : 7,726.50 = 7,726.50 : x
  2. Step 2: Convert to fraction form
    3,681/7,726.50 = 7,726.50/x
  3. Step 3: Cross multiply
    3,681x = 7,726.50 × 7,726.50
  4. Step 4: Simplify right side
    3,681x = 59,698,802.25
  5. Step 5: Solve for x
    x = 59,698,802.25/3,681
  6. Step 6: Final answer
    x = 16,218.09

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.