Finding the Fourth Proportional to 7,946.09, 11,919.70 and 2,102.63
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Solution
The fourth proportional to 7,946.09, 11,919.70 and 2,102.63 is: 3,154.09
Step by Step Solution
- Step 1: Write the proportion equation
7,946.09 : 11,919.70 = 2,102.63 : x - Step 2: Convert to fraction form
7,946.09/11,919.70 = 2,102.63/x - Step 3: Cross multiply
7,946.09x = 11,919.70 × 2,102.63 - Step 4: Simplify right side
7,946.09x = 25,062,659.21 - Step 5: Solve for x
x = 25,062,659.21/7,946.09 - Step 6: Final answer
x = 3,154.09
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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.