Finding the Fourth Proportional to 2,387.67, 3,582.58 and 1,290.75
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Solution
The fourth proportional to 2,387.67, 3,582.58 and 1,290.75 is: 1,936.70
Step by Step Solution
- Step 1: Write the proportion equation
2,387.67 : 3,582.58 = 1,290.75 : x - Step 2: Convert to fraction form
2,387.67/3,582.58 = 1,290.75/x - Step 3: Cross multiply
2,387.67x = 3,582.58 × 1,290.75 - Step 4: Simplify right side
2,387.67x = 4,624,211.91 - Step 5: Solve for x
x = 4,624,211.91/2,387.67 - Step 6: Final answer
x = 1,936.70
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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.