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Finding the Third Proportional to 4,038.19 and 8,713.69

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Solution

The third proportional to 4,038.19 and 8,713.69 is: 18,802.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,038.19 : 8,713.69 = 8,713.69 : x
  2. Step 2: Convert to fraction form
    4,038.19/8,713.69 = 8,713.69/x
  3. Step 3: Cross multiply
    4,038.19x = 8,713.69 × 8,713.69
  4. Step 4: Simplify right side
    4,038.19x = 75,928,349.85
  5. Step 5: Solve for x
    x = 75,928,349.85/4,038.19
  6. Step 6: Final answer
    x = 18,802.58

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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.