Finding the Fourth Proportional to 7,886.64, 11,838.15 and 5,808.99
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Solution
The fourth proportional to 7,886.64, 11,838.15 and 5,808.99 is: 8,719.52
Step by Step Solution
- Step 1: Write the proportion equation
7,886.64 : 11,838.15 = 5,808.99 : x - Step 2: Convert to fraction form
7,886.64/11,838.15 = 5,808.99/x - Step 3: Cross multiply
7,886.64x = 11,838.15 × 5,808.99 - Step 4: Simplify right side
7,886.64x = 68,767,694.97 - Step 5: Solve for x
x = 68,767,694.97/7,886.64 - Step 6: Final answer
x = 8,719.52
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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.