Finding the Third Proportional to 4,200 and 4,620
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Solution
The third proportional to 4,200 and 4,620 is: 5,082
Step by Step Solution
- Step 1: Write the proportion equation
4,200 : 4,620 = 4,620 : x - Step 2: Convert to fraction form
4,200/4,620 = 4,620/x - Step 3: Cross multiply
4,200x = 4,620 × 4,620 - Step 4: Simplify right side
4,200x = 21,344,400 - Step 5: Solve for x
x = 21,344,400/4,200 - Step 6: Final answer
x = 5,082
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Why These Related Problems?
These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.