Finding the Fourth Proportional to 2,118, 3,177 and 579
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Solution
The fourth proportional to 2,118, 3,177 and 579 is: 868.50
Step by Step Solution
- Step 1: Write the proportion equation
2,118 : 3,177 = 579 : x - Step 2: Convert to fraction form
2,118/3,177 = 579/x - Step 3: Cross multiply
2,118x = 3,177 × 579 - Step 4: Simplify right side
2,118x = 1,839,483 - Step 5: Solve for x
x = 1,839,483/2,118 - Step 6: Final answer
x = 868.50
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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.