Finding the Fourth Proportional to 7,840.62, 10,819.64 and 4,482.99
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Solution
The fourth proportional to 7,840.62, 10,819.64 and 4,482.99 is: 6,186.29
Step by Step Solution
- Step 1: Write the proportion equation
7,840.62 : 10,819.64 = 4,482.99 : x - Step 2: Convert to fraction form
7,840.62/10,819.64 = 4,482.99/x - Step 3: Cross multiply
7,840.62x = 10,819.64 × 4,482.99 - Step 4: Simplify right side
7,840.62x = 48,504,349.13 - Step 5: Solve for x
x = 48,504,349.13/7,840.62 - Step 6: Final answer
x = 6,186.29
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.