Finding the Fourth Proportional to 4,969.95, 6,854.40 and 2,980.05
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Solution
The fourth proportional to 4,969.95, 6,854.40 and 2,980.05 is: 4,109.99
Step by Step Solution
- Step 1: Write the proportion equation
4,969.95 : 6,854.40 = 2,980.05 : x - Step 2: Convert to fraction form
4,969.95/6,854.40 = 2,980.05/x - Step 3: Cross multiply
4,969.95x = 6,854.40 × 2,980.05 - Step 4: Simplify right side
4,969.95x = 20,426,454.72 - Step 5: Solve for x
x = 20,426,454.72/4,969.95 - Step 6: Final answer
x = 4,109.99
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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.