Finding the Fourth Proportional to 7,911.41, 11,867.92 and 2,644.99
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Solution
The fourth proportional to 7,911.41, 11,867.92 and 2,644.99 is: 3,967.75
Step by Step Solution
- Step 1: Write the proportion equation
7,911.41 : 11,867.92 = 2,644.99 : x - Step 2: Convert to fraction form
7,911.41/11,867.92 = 2,644.99/x - Step 3: Cross multiply
7,911.41x = 11,867.92 × 2,644.99 - Step 4: Simplify right side
7,911.41x = 31,390,493.44 - Step 5: Solve for x
x = 31,390,493.44/7,911.41 - Step 6: Final answer
x = 3,967.75
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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.