Finding the Fourth Proportional to 7,884.20, 11,807.67 and 6,628.70
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Solution
The fourth proportional to 7,884.20, 11,807.67 and 6,628.70 is: 9,927.39
Step by Step Solution
- Step 1: Write the proportion equation
7,884.20 : 11,807.67 = 6,628.70 : x - Step 2: Convert to fraction form
7,884.20/11,807.67 = 6,628.70/x - Step 3: Cross multiply
7,884.20x = 11,807.67 × 6,628.70 - Step 4: Simplify right side
7,884.20x = 78,269,502.13 - Step 5: Solve for x
x = 78,269,502.13/7,884.20 - Step 6: Final answer
x = 9,927.39
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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.