Finding the Fourth Proportional to 7,990.47, 11,024.91 and 6,005.79
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Solution
The fourth proportional to 7,990.47, 11,024.91 and 6,005.79 is: 8,286.53
Step by Step Solution
- Step 1: Write the proportion equation
7,990.47 : 11,024.91 = 6,005.79 : x - Step 2: Convert to fraction form
7,990.47/11,024.91 = 6,005.79/x - Step 3: Cross multiply
7,990.47x = 11,024.91 × 6,005.79 - Step 4: Simplify right side
7,990.47x = 66,213,294.23 - Step 5: Solve for x
x = 66,213,294.23/7,990.47 - Step 6: Final answer
x = 8,286.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.