Finding the Fourth Proportional to 7,979.42, 11,011.99 and 4,442.63
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Solution
The fourth proportional to 7,979.42, 11,011.99 and 4,442.63 is: 6,131.05
Step by Step Solution
- Step 1: Write the proportion equation
7,979.42 : 11,011.99 = 4,442.63 : x - Step 2: Convert to fraction form
7,979.42/11,011.99 = 4,442.63/x - Step 3: Cross multiply
7,979.42x = 11,011.99 × 4,442.63 - Step 4: Simplify right side
7,979.42x = 48,922,197.13 - Step 5: Solve for x
x = 48,922,197.13/7,979.42 - Step 6: Final answer
x = 6,131.05
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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.