Finding the Fourth Proportional to 1,874.52, 2,812.59 and 720
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Solution
The fourth proportional to 1,874.52, 2,812.59 and 720 is: 1,080.31
Step by Step Solution
- Step 1: Write the proportion equation
1,874.52 : 2,812.59 = 720 : x - Step 2: Convert to fraction form
1,874.52/2,812.59 = 720/x - Step 3: Cross multiply
1,874.52x = 2,812.59 × 720 - Step 4: Simplify right side
1,874.52x = 2,025,064.80 - Step 5: Solve for x
x = 2,025,064.80/1,874.52 - Step 6: Final answer
x = 1,080.31
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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.