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Finding the Third Proportional to 3,997,938.75 and 8,634,216

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Solution

The third proportional to 3,997,938.75 and 8,634,216 is: 18,647,030.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997,938.75 : 8,634,216 = 8,634,216 : x
  2. Step 2: Convert to fraction form
    3,997,938.75/8,634,216 = 8,634,216/x
  3. Step 3: Cross multiply
    3,997,938.75x = 8,634,216 × 8,634,216
  4. Step 4: Simplify right side
    3,997,938.75x = 74,549,685,934,656
  5. Step 5: Solve for x
    x = 74,549,685,934,656/3,997,938.75
  6. Step 6: Final answer
    x = 18,647,030.53

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.