Finding the Fourth Proportional to 1,581.12, 2,370 and 606.96
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Solution
The fourth proportional to 1,581.12, 2,370 and 606.96 is: 909.80
Step by Step Solution
- Step 1: Write the proportion equation
1,581.12 : 2,370 = 606.96 : x - Step 2: Convert to fraction form
1,581.12/2,370 = 606.96/x - Step 3: Cross multiply
1,581.12x = 2,370 × 606.96 - Step 4: Simplify right side
1,581.12x = 1,438,495.20 - Step 5: Solve for x
x = 1,438,495.20/1,581.12 - Step 6: Final answer
x = 909.80
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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.