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Finding the Third Proportional to 4,188.90 and 9,178.00

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Solution

The third proportional to 4,188.90 and 9,178.00 is: 20,109.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.90 : 9,178.00 = 9,178.00 : x
  2. Step 2: Convert to fraction form
    4,188.90/9,178.00 = 9,178.00/x
  3. Step 3: Cross multiply
    4,188.90x = 9,178.00 × 9,178.00
  4. Step 4: Simplify right side
    4,188.90x = 84,235,612.30
  5. Step 5: Solve for x
    x = 84,235,612.30/4,188.90
  6. Step 6: Final answer
    x = 20,109.23

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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.