Finding the Fourth Proportional to 4,918.12, 6,787.01 and 2,679.99
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Solution
The fourth proportional to 4,918.12, 6,787.01 and 2,679.99 is: 3,698.39
Step by Step Solution
- Step 1: Write the proportion equation
4,918.12 : 6,787.01 = 2,679.99 : x - Step 2: Convert to fraction form
4,918.12/6,787.01 = 2,679.99/x - Step 3: Cross multiply
4,918.12x = 6,787.01 × 2,679.99 - Step 4: Simplify right side
4,918.12x = 18,189,119.79 - Step 5: Solve for x
x = 18,189,119.79/4,918.12 - Step 6: Final answer
x = 3,698.39
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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.