Finding the Fourth Proportional to 2,187,057.75, 3,018,139.74 and 1,281,639.75
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Solution
The fourth proportional to 2,187,057.75, 3,018,139.74 and 1,281,639.75 is: 1,768,662.88
Step by Step Solution
- Step 1: Write the proportion equation
2,187,057.75 : 3,018,139.74 = 1,281,639.75 : x - Step 2: Convert to fraction form
2,187,057.75/3,018,139.74 = 1,281,639.75/x - Step 3: Cross multiply
2,187,057.75x = 3,018,139.74 × 1,281,639.75 - Step 4: Simplify right side
2,187,057.75x = 3,868,167,861,838.67 - Step 5: Solve for x
x = 3,868,167,861,838.67/2,187,057.75 - Step 6: Final answer
x = 1,768,662.88
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1.5x scale
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.