Finding the Fourth Proportional to 3,965,860.17, 5,472,967.91 and 2,155,140.81
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Solution
The fourth proportional to 3,965,860.17, 5,472,967.91 and 2,155,140.81 is: 2,974,138.26
Step by Step Solution
- Step 1: Write the proportion equation
3,965,860.17 : 5,472,967.91 = 2,155,140.81 : x - Step 2: Convert to fraction form
3,965,860.17/5,472,967.91 = 2,155,140.81/x - Step 3: Cross multiply
3,965,860.17x = 5,472,967.91 × 2,155,140.81 - Step 4: Simplify right side
3,965,860.17x = 11,795,016,483,885.70 - Step 5: Solve for x
x = 11,795,016,483,885.70/3,965,860.17 - Step 6: Final answer
x = 2,974,138.26
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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.