Finding the Fourth Proportional to 7.79, 11.67 and 6
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Solution
The fourth proportional to 7.79, 11.67 and 6 is: 8.99
Step by Step Solution
- Step 1: Write the proportion equation
7.79 : 11.67 = 6 : x - Step 2: Convert to fraction form
7.79/11.67 = 6/x - Step 3: Cross multiply
7.79x = 11.67 × 6 - Step 4: Simplify right side
7.79x = 70.02 - Step 5: Solve for x
x = 70.02/7.79 - Step 6: Final answer
x = 8.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.