Home / 2,986.19-4,089.09-2,868.56

Finding the Fourth Proportional to 2,986.19, 4,089.09 and 2,868.56

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Solution

The fourth proportional to 2,986.19, 4,089.09 and 2,868.56 is: 3,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.19 : 4,089.09 = 2,868.56 : x
  2. Step 2: Convert to fraction form
    2,986.19/4,089.09 = 2,868.56/x
  3. Step 3: Cross multiply
    2,986.19x = 4,089.09 × 2,868.56
  4. Step 4: Simplify right side
    2,986.19x = 11,729,765.22
  5. Step 5: Solve for x
    x = 11,729,765.22/2,986.19
  6. Step 6: Final answer
    x = 3,928.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.