Finding the Fourth Proportional to 1,910.05, 2,865.57 and 813.85
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Solution
The fourth proportional to 1,910.05, 2,865.57 and 813.85 is: 1,220.99
Step by Step Solution
- Step 1: Write the proportion equation
1,910.05 : 2,865.57 = 813.85 : x - Step 2: Convert to fraction form
1,910.05/2,865.57 = 813.85/x - Step 3: Cross multiply
1,910.05x = 2,865.57 × 813.85 - Step 4: Simplify right side
1,910.05x = 2,332,144.14 - Step 5: Solve for x
x = 2,332,144.14/1,910.05 - Step 6: Final answer
x = 1,220.99
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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.