Finding the Third Proportional to 3,430.75 and 7,390.75
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Solution
The third proportional to 3,430.75 and 7,390.75 is: 15,921.65
Step by Step Solution
- Step 1: Write the proportion equation
3,430.75 : 7,390.75 = 7,390.75 : x - Step 2: Convert to fraction form
3,430.75/7,390.75 = 7,390.75/x - Step 3: Cross multiply
3,430.75x = 7,390.75 × 7,390.75 - Step 4: Simplify right side
3,430.75x = 54,623,185.56 - Step 5: Solve for x
x = 54,623,185.56/3,430.75 - Step 6: Final answer
x = 15,921.65
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Why These Related Problems?
These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.