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Finding the Third Proportional to 3,666.50 and 4,213

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Solution

The third proportional to 3,666.50 and 4,213 is: 4,840.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,666.50 : 4,213 = 4,213 : x
  2. Step 2: Convert to fraction form
    3,666.50/4,213 = 4,213/x
  3. Step 3: Cross multiply
    3,666.50x = 4,213 × 4,213
  4. Step 4: Simplify right side
    3,666.50x = 17,749,369
  5. Step 5: Solve for x
    x = 17,749,369/3,666.50
  6. Step 6: Final answer
    x = 4,840.96

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.