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Finding the Third Proportional to 3,686.77 and 8,699.91

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Solution

The third proportional to 3,686.77 and 8,699.91 is: 20,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.77 : 8,699.91 = 8,699.91 : x
  2. Step 2: Convert to fraction form
    3,686.77/8,699.91 = 8,699.91/x
  3. Step 3: Cross multiply
    3,686.77x = 8,699.91 × 8,699.91
  4. Step 4: Simplify right side
    3,686.77x = 75,688,368.76
  5. Step 5: Solve for x
    x = 75,688,368.76/3,686.77
  6. Step 6: Final answer
    x = 20,529.75

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.