Home / 3,561.05-4,914.33-1,989.15

Finding the Fourth Proportional to 3,561.05, 4,914.33 and 1,989.15

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Solution

The fourth proportional to 3,561.05, 4,914.33 and 1,989.15 is: 2,745.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.05 : 4,914.33 = 1,989.15 : x
  2. Step 2: Convert to fraction form
    3,561.05/4,914.33 = 1,989.15/x
  3. Step 3: Cross multiply
    3,561.05x = 4,914.33 × 1,989.15
  4. Step 4: Simplify right side
    3,561.05x = 9,775,339.52
  5. Step 5: Solve for x
    x = 9,775,339.52/3,561.05
  6. Step 6: Final answer
    x = 2,745.07

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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.