Finding the Fourth Proportional to 2.68, 4 and 2.62
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Solution
The fourth proportional to 2.68, 4 and 2.62 is: 3.91
Step by Step Solution
- Step 1: Write the proportion equation
2.68 : 4 = 2.62 : x - Step 2: Convert to fraction form
2.68/4 = 2.62/x - Step 3: Cross multiply
2.68x = 4 × 2.62 - Step 4: Simplify right side
2.68x = 10.48 - Step 5: Solve for x
x = 10.48/2.68 - Step 6: Final answer
x = 3.91
Related Problems
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.