Finding the Fourth Proportional to 2,145.98, 3,220.68 and 976.07
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Solution
The fourth proportional to 2,145.98, 3,220.68 and 976.07 is: 1,464.88
Step by Step Solution
- Step 1: Write the proportion equation
2,145.98 : 3,220.68 = 976.07 : x - Step 2: Convert to fraction form
2,145.98/3,220.68 = 976.07/x - Step 3: Cross multiply
2,145.98x = 3,220.68 × 976.07 - Step 4: Simplify right side
2,145.98x = 3,143,609.13 - Step 5: Solve for x
x = 3,143,609.13/2,145.98 - Step 6: Final answer
x = 1,464.88
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1.5x scale
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.