Finding the Fourth Proportional to 4,387.99, 6,581.99 and 1,309.99
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Solution
The fourth proportional to 4,387.99, 6,581.99 and 1,309.99 is: 1,964.99
Step by Step Solution
- Step 1: Write the proportion equation
4,387.99 : 6,581.99 = 1,309.99 : x - Step 2: Convert to fraction form
4,387.99/6,581.99 = 1,309.99/x - Step 3: Cross multiply
4,387.99x = 6,581.99 × 1,309.99 - Step 4: Simplify right side
4,387.99x = 8,622,341.08 - Step 5: Solve for x
x = 8,622,341.08/4,387.99 - Step 6: Final answer
x = 1,964.99
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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.