Finding the Fourth Proportional to 2,112.58, 3,168.87 and 958.66
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Solution
The fourth proportional to 2,112.58, 3,168.87 and 958.66 is: 1,437.99
Step by Step Solution
- Step 1: Write the proportion equation
2,112.58 : 3,168.87 = 958.66 : x - Step 2: Convert to fraction form
2,112.58/3,168.87 = 958.66/x - Step 3: Cross multiply
2,112.58x = 3,168.87 × 958.66 - Step 4: Simplify right side
2,112.58x = 3,037,868.91 - Step 5: Solve for x
x = 3,037,868.91/2,112.58 - Step 6: Final answer
x = 1,437.99
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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.