Finding the Fourth Proportional to 5,718, 8,578.08 and 2,640
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Solution
The fourth proportional to 5,718, 8,578.08 and 2,640 is: 3,960.50
Step by Step Solution
- Step 1: Write the proportion equation
5,718 : 8,578.08 = 2,640 : x - Step 2: Convert to fraction form
5,718/8,578.08 = 2,640/x - Step 3: Cross multiply
5,718x = 8,578.08 × 2,640 - Step 4: Simplify right side
5,718x = 22,646,131.20 - Step 5: Solve for x
x = 22,646,131.20/5,718 - Step 6: Final answer
x = 3,960.50
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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.