Finding the Fourth Proportional to 2,191.36, 3,286.68 and 652
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Solution
The fourth proportional to 2,191.36, 3,286.68 and 652 is: 977.89
Step by Step Solution
- Step 1: Write the proportion equation
2,191.36 : 3,286.68 = 652 : x - Step 2: Convert to fraction form
2,191.36/3,286.68 = 652/x - Step 3: Cross multiply
2,191.36x = 3,286.68 × 652 - Step 4: Simplify right side
2,191.36x = 2,142,915.36 - Step 5: Solve for x
x = 2,142,915.36/2,191.36 - Step 6: Final answer
x = 977.89
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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.