Finding the Fourth Proportional to 2,221.18, 3,331.78 and 922.66
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Solution
The fourth proportional to 2,221.18, 3,331.78 and 922.66 is: 1,383.99
Step by Step Solution
- Step 1: Write the proportion equation
2,221.18 : 3,331.78 = 922.66 : x - Step 2: Convert to fraction form
2,221.18/3,331.78 = 922.66/x - Step 3: Cross multiply
2,221.18x = 3,331.78 × 922.66 - Step 4: Simplify right side
2,221.18x = 3,074,089.50 - Step 5: Solve for x
x = 3,074,089.50/2,221.18 - Step 6: Final answer
x = 1,383.99
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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.