Finding the Fourth Proportional to 2,101.97, 3,152.72 and 641.13
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Solution
The fourth proportional to 2,101.97, 3,152.72 and 641.13 is: 961.62
Step by Step Solution
- Step 1: Write the proportion equation
2,101.97 : 3,152.72 = 641.13 : x - Step 2: Convert to fraction form
2,101.97/3,152.72 = 641.13/x - Step 3: Cross multiply
2,101.97x = 3,152.72 × 641.13 - Step 4: Simplify right side
2,101.97x = 2,021,303.37 - Step 5: Solve for x
x = 2,021,303.37/2,101.97 - Step 6: Final answer
x = 961.62
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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.