Finding the Fourth Proportional to 7,908.99, 10,915.21 and 4,551.95
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Solution
The fourth proportional to 7,908.99, 10,915.21 and 4,551.95 is: 6,282.15
Step by Step Solution
- Step 1: Write the proportion equation
7,908.99 : 10,915.21 = 4,551.95 : x - Step 2: Convert to fraction form
7,908.99/10,915.21 = 4,551.95/x - Step 3: Cross multiply
7,908.99x = 10,915.21 × 4,551.95 - Step 4: Simplify right side
7,908.99x = 49,685,436.13 - Step 5: Solve for x
x = 49,685,436.13/7,908.99 - Step 6: Final answer
x = 6,282.15
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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.