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Finding the Third Proportional to 4,005.25 and 8,790.50

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Solution

The third proportional to 4,005.25 and 8,790.50 is: 19,292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,005.25 : 8,790.50 = 8,790.50 : x
  2. Step 2: Convert to fraction form
    4,005.25/8,790.50 = 8,790.50/x
  3. Step 3: Cross multiply
    4,005.25x = 8,790.50 × 8,790.50
  4. Step 4: Simplify right side
    4,005.25x = 77,272,890.25
  5. Step 5: Solve for x
    x = 77,272,890.25/4,005.25
  6. Step 6: Final answer
    x = 19,292.90

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.