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Finding the Third Proportional to 3,656.63 and 5,211.38

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Solution

The third proportional to 3,656.63 and 5,211.38 is: 7,427.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.63 : 5,211.38 = 5,211.38 : x
  2. Step 2: Convert to fraction form
    3,656.63/5,211.38 = 5,211.38/x
  3. Step 3: Cross multiply
    3,656.63x = 5,211.38 × 5,211.38
  4. Step 4: Simplify right side
    3,656.63x = 27,158,429.39
  5. Step 5: Solve for x
    x = 27,158,429.39/3,656.63
  6. Step 6: Final answer
    x = 7,427.18

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.