Finding the Fourth Proportional to 7,693.20, 11,487.36 and 6,115.44
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Solution
The fourth proportional to 7,693.20, 11,487.36 and 6,115.44 is: 9,131.47
Step by Step Solution
- Step 1: Write the proportion equation
7,693.20 : 11,487.36 = 6,115.44 : x - Step 2: Convert to fraction form
7,693.20/11,487.36 = 6,115.44/x - Step 3: Cross multiply
7,693.20x = 11,487.36 × 6,115.44 - Step 4: Simplify right side
7,693.20x = 70,250,260.84 - Step 5: Solve for x
x = 70,250,260.84/7,693.20 - Step 6: Final answer
x = 9,131.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.