Finding the Fourth Proportional to 7,860.36, 11,790.69 and 6,293.09
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Solution
The fourth proportional to 7,860.36, 11,790.69 and 6,293.09 is: 9,439.75
Step by Step Solution
- Step 1: Write the proportion equation
7,860.36 : 11,790.69 = 6,293.09 : x - Step 2: Convert to fraction form
7,860.36/11,790.69 = 6,293.09/x - Step 3: Cross multiply
7,860.36x = 11,790.69 × 6,293.09 - Step 4: Simplify right side
7,860.36x = 74,199,814.38 - Step 5: Solve for x
x = 74,199,814.38/7,860.36 - Step 6: Final answer
x = 9,439.75
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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.