Finding the Fourth Proportional to 2,663.93, 3,995.68 and 815.06
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Solution
The fourth proportional to 2,663.93, 3,995.68 and 815.06 is: 1,222.52
Step by Step Solution
- Step 1: Write the proportion equation
2,663.93 : 3,995.68 = 815.06 : x - Step 2: Convert to fraction form
2,663.93/3,995.68 = 815.06/x - Step 3: Cross multiply
2,663.93x = 3,995.68 × 815.06 - Step 4: Simplify right side
2,663.93x = 3,256,698.96 - Step 5: Solve for x
x = 3,256,698.96/2,663.93 - Step 6: Final answer
x = 1,222.52
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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.