Finding the Fourth Proportional to 8,491.52, 11,715.08 and 6,258.75
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Solution
The fourth proportional to 8,491.52, 11,715.08 and 6,258.75 is: 8,634.70
Step by Step Solution
- Step 1: Write the proportion equation
8,491.52 : 11,715.08 = 6,258.75 : x - Step 2: Convert to fraction form
8,491.52/11,715.08 = 6,258.75/x - Step 3: Cross multiply
8,491.52x = 11,715.08 × 6,258.75 - Step 4: Simplify right side
8,491.52x = 73,321,725.66 - Step 5: Solve for x
x = 73,321,725.66/8,491.52 - Step 6: Final answer
x = 8,634.70
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Double scale
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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.