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Finding the Third Proportional to 4,579.50 and 9,987.94

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Solution

The third proportional to 4,579.50 and 9,987.94 is: 21,783.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,579.50 : 9,987.94 = 9,987.94 : x
  2. Step 2: Convert to fraction form
    4,579.50/9,987.94 = 9,987.94/x
  3. Step 3: Cross multiply
    4,579.50x = 9,987.94 × 9,987.94
  4. Step 4: Simplify right side
    4,579.50x = 99,758,895.50
  5. Step 5: Solve for x
    x = 99,758,895.50/4,579.50
  6. Step 6: Final answer
    x = 21,783.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.