Finding the Fourth Proportional to 7,764.97, 11,639.08 and 3,811.62
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Solution
The fourth proportional to 7,764.97, 11,639.08 and 3,811.62 is: 5,713.32
Step by Step Solution
- Step 1: Write the proportion equation
7,764.97 : 11,639.08 = 3,811.62 : x - Step 2: Convert to fraction form
7,764.97/11,639.08 = 3,811.62/x - Step 3: Cross multiply
7,764.97x = 11,639.08 × 3,811.62 - Step 4: Simplify right side
7,764.97x = 44,363,731.05 - Step 5: Solve for x
x = 44,363,731.05/7,764.97 - Step 6: Final answer
x = 5,713.32
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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.