Finding the Third Proportional to 2,478.09 and 3,984.19
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Solution
The third proportional to 2,478.09 and 3,984.19 is: 6,405.63
Step by Step Solution
- Step 1: Write the proportion equation
2,478.09 : 3,984.19 = 3,984.19 : x - Step 2: Convert to fraction form
2,478.09/3,984.19 = 3,984.19/x - Step 3: Cross multiply
2,478.09x = 3,984.19 × 3,984.19 - Step 4: Simplify right side
2,478.09x = 15,873,750.04 - Step 5: Solve for x
x = 15,873,750.04/2,478.09 - Step 6: Final answer
x = 6,405.63
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Why These Related Problems?
These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.