Home / 3,989.12-5,977.94-2,940.84

Finding the Fourth Proportional to 3,989.12, 5,977.94 and 2,940.84

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Solution

The fourth proportional to 3,989.12, 5,977.94 and 2,940.84 is: 4,407.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.12 : 5,977.94 = 2,940.84 : x
  2. Step 2: Convert to fraction form
    3,989.12/5,977.94 = 2,940.84/x
  3. Step 3: Cross multiply
    3,989.12x = 5,977.94 × 2,940.84
  4. Step 4: Simplify right side
    3,989.12x = 17,580,150.37
  5. Step 5: Solve for x
    x = 17,580,150.37/3,989.12
  6. Step 6: Final answer
    x = 4,407.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.