Finding the Fourth Proportional to 7,830.18, 11,737.44 and 5,649.12
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Solution
The fourth proportional to 7,830.18, 11,737.44 and 5,649.12 is: 8,468.03
Step by Step Solution
- Step 1: Write the proportion equation
7,830.18 : 11,737.44 = 5,649.12 : x - Step 2: Convert to fraction form
7,830.18/11,737.44 = 5,649.12/x - Step 3: Cross multiply
7,830.18x = 11,737.44 × 5,649.12 - Step 4: Simplify right side
7,830.18x = 66,306,207.05 - Step 5: Solve for x
x = 66,306,207.05/7,830.18 - Step 6: Final answer
x = 8,468.03
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1.5x scale
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.