Finding the Fourth Proportional to 7,717.21, 11,577.42 and 4,386.99
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Solution
The fourth proportional to 7,717.21, 11,577.42 and 4,386.99 is: 6,581.40
Step by Step Solution
- Step 1: Write the proportion equation
7,717.21 : 11,577.42 = 4,386.99 : x - Step 2: Convert to fraction form
7,717.21/11,577.42 = 4,386.99/x - Step 3: Cross multiply
7,717.21x = 11,577.42 × 4,386.99 - Step 4: Simplify right side
7,717.21x = 50,789,979.21 - Step 5: Solve for x
x = 50,789,979.21/7,717.21 - Step 6: Final answer
x = 6,581.40
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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.