Finding the Fourth Proportional to 7,822.77, 11,716.93 and 7,391.44
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Solution
The fourth proportional to 7,822.77, 11,716.93 and 7,391.44 is: 11,070.88
Step by Step Solution
- Step 1: Write the proportion equation
7,822.77 : 11,716.93 = 7,391.44 : x - Step 2: Convert to fraction form
7,822.77/11,716.93 = 7,391.44/x - Step 3: Cross multiply
7,822.77x = 11,716.93 × 7,391.44 - Step 4: Simplify right side
7,822.77x = 86,604,985.08 - Step 5: Solve for x
x = 86,604,985.08/7,822.77 - Step 6: Final answer
x = 11,070.88
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1.5x scale
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.