Finding the Fourth Proportional to 3,871,354.88, 5,342,606.90 and 2,129,159.02
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Solution
The fourth proportional to 3,871,354.88, 5,342,606.90 and 2,129,159.02 is: 2,938,314.89
Step by Step Solution
- Step 1: Write the proportion equation
3,871,354.88 : 5,342,606.90 = 2,129,159.02 : x - Step 2: Convert to fraction form
3,871,354.88/5,342,606.90 = 2,129,159.02/x - Step 3: Cross multiply
3,871,354.88x = 5,342,606.90 × 2,129,159.02 - Step 4: Simplify right side
3,871,354.88x = 11,375,259,671,449.24 - Step 5: Solve for x
x = 11,375,259,671,449.24/3,871,354.88 - Step 6: Final answer
x = 2,938,314.89
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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.