Finding the Fourth Proportional to 2,615.91, 3,923.82 and 766.99
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Solution
The fourth proportional to 2,615.91, 3,923.82 and 766.99 is: 1,150.47
Step by Step Solution
- Step 1: Write the proportion equation
2,615.91 : 3,923.82 = 766.99 : x - Step 2: Convert to fraction form
2,615.91/3,923.82 = 766.99/x - Step 3: Cross multiply
2,615.91x = 3,923.82 × 766.99 - Step 4: Simplify right side
2,615.91x = 3,009,522.08 - Step 5: Solve for x
x = 3,009,522.08/2,615.91 - Step 6: Final answer
x = 1,150.47
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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.