Finding the Fourth Proportional to 8,653.62, 11,935.20 and 6,263.94
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Solution
The fourth proportional to 8,653.62, 11,935.20 and 6,263.94 is: 8,639.32
Step by Step Solution
- Step 1: Write the proportion equation
8,653.62 : 11,935.20 = 6,263.94 : x - Step 2: Convert to fraction form
8,653.62/11,935.20 = 6,263.94/x - Step 3: Cross multiply
8,653.62x = 11,935.20 × 6,263.94 - Step 4: Simplify right side
8,653.62x = 74,761,376.13 - Step 5: Solve for x
x = 74,761,376.13/8,653.62 - Step 6: Final answer
x = 8,639.32
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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.