Finding the Fourth Proportional to 2,712.28, 3,742.96 and 1,470.28
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Solution
The fourth proportional to 2,712.28, 3,742.96 and 1,470.28 is: 2,028.99
Step by Step Solution
- Step 1: Write the proportion equation
2,712.28 : 3,742.96 = 1,470.28 : x - Step 2: Convert to fraction form
2,712.28/3,742.96 = 1,470.28/x - Step 3: Cross multiply
2,712.28x = 3,742.96 × 1,470.28 - Step 4: Simplify right side
2,712.28x = 5,503,199.23 - Step 5: Solve for x
x = 5,503,199.23/2,712.28 - Step 6: Final answer
x = 2,028.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.