Finding the Fourth Proportional to 2,187.99, 3,281.98 and 648.99
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Solution
The fourth proportional to 2,187.99, 3,281.98 and 648.99 is: 973.48
Step by Step Solution
- Step 1: Write the proportion equation
2,187.99 : 3,281.98 = 648.99 : x - Step 2: Convert to fraction form
2,187.99/3,281.98 = 648.99/x - Step 3: Cross multiply
2,187.99x = 3,281.98 × 648.99 - Step 4: Simplify right side
2,187.99x = 2,129,958.27 - Step 5: Solve for x
x = 2,129,958.27/2,187.99 - Step 6: Final answer
x = 973.48
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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.