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Finding the Third Proportional to 4,479.75 and 5,289.75

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Solution

The third proportional to 4,479.75 and 5,289.75 is: 6,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.75 : 5,289.75 = 5,289.75 : x
  2. Step 2: Convert to fraction form
    4,479.75/5,289.75 = 5,289.75/x
  3. Step 3: Cross multiply
    4,479.75x = 5,289.75 × 5,289.75
  4. Step 4: Simplify right side
    4,479.75x = 27,981,455.06
  5. Step 5: Solve for x
    x = 27,981,455.06/4,479.75
  6. Step 6: Final answer
    x = 6,246.21

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.