Finding the Fourth Proportional to 2,219.52, 3,329.67 and 921.09
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Solution
The fourth proportional to 2,219.52, 3,329.67 and 921.09 is: 1,381.80
Step by Step Solution
- Step 1: Write the proportion equation
2,219.52 : 3,329.67 = 921.09 : x - Step 2: Convert to fraction form
2,219.52/3,329.67 = 921.09/x - Step 3: Cross multiply
2,219.52x = 3,329.67 × 921.09 - Step 4: Simplify right side
2,219.52x = 3,066,925.74 - Step 5: Solve for x
x = 3,066,925.74/2,219.52 - Step 6: Final answer
x = 1,381.80
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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.