Finding the Third Proportional to 3,120.75 and 6,789.75
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Solution
The third proportional to 3,120.75 and 6,789.75 is: 14,772.32
Step by Step Solution
- Step 1: Write the proportion equation
3,120.75 : 6,789.75 = 6,789.75 : x - Step 2: Convert to fraction form
3,120.75/6,789.75 = 6,789.75/x - Step 3: Cross multiply
3,120.75x = 6,789.75 × 6,789.75 - Step 4: Simplify right side
3,120.75x = 46,100,705.06 - Step 5: Solve for x
x = 46,100,705.06/3,120.75 - Step 6: Final answer
x = 14,772.32
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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.