Finding the Fourth Proportional to 2,386.99, 3,579.99 and 655.21
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Solution
The fourth proportional to 2,386.99, 3,579.99 and 655.21 is: 982.68
Step by Step Solution
- Step 1: Write the proportion equation
2,386.99 : 3,579.99 = 655.21 : x - Step 2: Convert to fraction form
2,386.99/3,579.99 = 655.21/x - Step 3: Cross multiply
2,386.99x = 3,579.99 × 655.21 - Step 4: Simplify right side
2,386.99x = 2,345,645.25 - Step 5: Solve for x
x = 2,345,645.25/2,386.99 - Step 6: Final answer
x = 982.68
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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.