Finding the Fourth Proportional to 5,378.68, 7,420.97 and 3,254.99
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Solution
The fourth proportional to 5,378.68, 7,420.97 and 3,254.99 is: 4,490.91
Step by Step Solution
- Step 1: Write the proportion equation
5,378.68 : 7,420.97 = 3,254.99 : x - Step 2: Convert to fraction form
5,378.68/7,420.97 = 3,254.99/x - Step 3: Cross multiply
5,378.68x = 7,420.97 × 3,254.99 - Step 4: Simplify right side
5,378.68x = 24,155,166.87 - Step 5: Solve for x
x = 24,155,166.87/5,378.68 - Step 6: Final answer
x = 4,490.91
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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.