Finding the Fourth Proportional to 7,486.23, 11,229.36 and 3,325.26
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Solution
The fourth proportional to 7,486.23, 11,229.36 and 3,325.26 is: 4,987.90
Step by Step Solution
- Step 1: Write the proportion equation
7,486.23 : 11,229.36 = 3,325.26 : x - Step 2: Convert to fraction form
7,486.23/11,229.36 = 3,325.26/x - Step 3: Cross multiply
7,486.23x = 11,229.36 × 3,325.26 - Step 4: Simplify right side
7,486.23x = 37,340,541.63 - Step 5: Solve for x
x = 37,340,541.63/7,486.23 - Step 6: Final answer
x = 4,987.90
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Double scale
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Similar ratio
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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.