Finding the Fourth Proportional to 2,678.94, 4,018.68 and 731.28
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Solution
The fourth proportional to 2,678.94, 4,018.68 and 731.28 is: 1,096.99
Step by Step Solution
- Step 1: Write the proportion equation
2,678.94 : 4,018.68 = 731.28 : x - Step 2: Convert to fraction form
2,678.94/4,018.68 = 731.28/x - Step 3: Cross multiply
2,678.94x = 4,018.68 × 731.28 - Step 4: Simplify right side
2,678.94x = 2,938,780.31 - Step 5: Solve for x
x = 2,938,780.31/2,678.94 - Step 6: Final answer
x = 1,096.99
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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.