Home / 3,579.21-4,939.59-1,986.36

Finding the Fourth Proportional to 3,579.21, 4,939.59 and 1,986.36

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Solution

The fourth proportional to 3,579.21, 4,939.59 and 1,986.36 is: 2,741.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.21 : 4,939.59 = 1,986.36 : x
  2. Step 2: Convert to fraction form
    3,579.21/4,939.59 = 1,986.36/x
  3. Step 3: Cross multiply
    3,579.21x = 4,939.59 × 1,986.36
  4. Step 4: Simplify right side
    3,579.21x = 9,811,803.99
  5. Step 5: Solve for x
    x = 9,811,803.99/3,579.21
  6. Step 6: Final answer
    x = 2,741.33

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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.