Home / 3,561.09-4,914.53-1,989.19

Finding the Fourth Proportional to 3,561.09, 4,914.53 and 1,989.19

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Solution

The fourth proportional to 3,561.09, 4,914.53 and 1,989.19 is: 2,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.09 : 4,914.53 = 1,989.19 : x
  2. Step 2: Convert to fraction form
    3,561.09/4,914.53 = 1,989.19/x
  3. Step 3: Cross multiply
    3,561.09x = 4,914.53 × 1,989.19
  4. Step 4: Simplify right side
    3,561.09x = 9,775,933.93
  5. Step 5: Solve for x
    x = 9,775,933.93/3,561.09
  6. Step 6: Final answer
    x = 2,745.21

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Half scale
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Double scale
Find fourth proportional to 3,562.09, 4,915.91 and 1,990.19
Similar ratio
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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.