Finding the Fourth Proportional to 7,691.64, 11,546.58 and 6,474.21
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Solution
The fourth proportional to 7,691.64, 11,546.58 and 6,474.21 is: 9,718.99
Step by Step Solution
- Step 1: Write the proportion equation
7,691.64 : 11,546.58 = 6,474.21 : x - Step 2: Convert to fraction form
7,691.64/11,546.58 = 6,474.21/x - Step 3: Cross multiply
7,691.64x = 11,546.58 × 6,474.21 - Step 4: Simplify right side
7,691.64x = 74,754,983.70 - Step 5: Solve for x
x = 74,754,983.70/7,691.64 - Step 6: Final answer
x = 9,718.99
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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.