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Finding the Third Proportional to 3,658.50 and 8,587.13

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Solution

The third proportional to 3,658.50 and 8,587.13 is: 20,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.50 : 8,587.13 = 8,587.13 : x
  2. Step 2: Convert to fraction form
    3,658.50/8,587.13 = 8,587.13/x
  3. Step 3: Cross multiply
    3,658.50x = 8,587.13 × 8,587.13
  4. Step 4: Simplify right side
    3,658.50x = 73,738,715.77
  5. Step 5: Solve for x
    x = 73,738,715.77/3,658.50
  6. Step 6: Final answer
    x = 20,155.45

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.