Finding the Fourth Proportional to 7,639.62, 11,455.93 and 2,961.87
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Solution
The fourth proportional to 7,639.62, 11,455.93 and 2,961.87 is: 4,441.45
Step by Step Solution
- Step 1: Write the proportion equation
7,639.62 : 11,455.93 = 2,961.87 : x - Step 2: Convert to fraction form
7,639.62/11,455.93 = 2,961.87/x - Step 3: Cross multiply
7,639.62x = 11,455.93 × 2,961.87 - Step 4: Simplify right side
7,639.62x = 33,930,936.13 - Step 5: Solve for x
x = 33,930,936.13/7,639.62 - Step 6: Final answer
x = 4,441.45
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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.