Finding the Fourth Proportional to 3,939,516.24, 5,436,533.88 and 2,128,680.24
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Solution
The fourth proportional to 3,939,516.24, 5,436,533.88 and 2,128,680.24 is: 2,937,579.52
Step by Step Solution
- Step 1: Write the proportion equation
3,939,516.24 : 5,436,533.88 = 2,128,680.24 : x - Step 2: Convert to fraction form
3,939,516.24/5,436,533.88 = 2,128,680.24/x - Step 3: Cross multiply
3,939,516.24x = 5,436,533.88 × 2,128,680.24 - Step 4: Simplify right side
3,939,516.24x = 11,572,642,244,446.53 - Step 5: Solve for x
x = 11,572,642,244,446.53/3,939,516.24 - Step 6: Final answer
x = 2,937,579.52
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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.