Finding the Fourth Proportional to 2,128.99, 3,193.48 and 568.99
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Solution
The fourth proportional to 2,128.99, 3,193.48 and 568.99 is: 853.48
Step by Step Solution
- Step 1: Write the proportion equation
2,128.99 : 3,193.48 = 568.99 : x - Step 2: Convert to fraction form
2,128.99/3,193.48 = 568.99/x - Step 3: Cross multiply
2,128.99x = 3,193.48 × 568.99 - Step 4: Simplify right side
2,128.99x = 1,817,055.34 - Step 5: Solve for x
x = 1,817,055.34/2,128.99 - Step 6: Final answer
x = 853.48
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Double scale
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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.