Finding the Fourth Proportional to 2,280.39, 3,421.12 and 720.55
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Solution
The fourth proportional to 2,280.39, 3,421.12 and 720.55 is: 1,080.99
Step by Step Solution
- Step 1: Write the proportion equation
2,280.39 : 3,421.12 = 720.55 : x - Step 2: Convert to fraction form
2,280.39/3,421.12 = 720.55/x - Step 3: Cross multiply
2,280.39x = 3,421.12 × 720.55 - Step 4: Simplify right side
2,280.39x = 2,465,084.41 - Step 5: Solve for x
x = 2,465,084.41/2,280.39 - Step 6: Final answer
x = 1,080.99
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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.