Finding the Fourth Proportional to 7,924.60, 11,884.99 and 2,659.80
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Solution
The fourth proportional to 7,924.60, 11,884.99 and 2,659.80 is: 3,989.06
Step by Step Solution
- Step 1: Write the proportion equation
7,924.60 : 11,884.99 = 2,659.80 : x - Step 2: Convert to fraction form
7,924.60/11,884.99 = 2,659.80/x - Step 3: Cross multiply
7,924.60x = 11,884.99 × 2,659.80 - Step 4: Simplify right side
7,924.60x = 31,611,696.40 - Step 5: Solve for x
x = 31,611,696.40/7,924.60 - Step 6: Final answer
x = 3,989.06
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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.