Home / 3,198.18-4,412.37-1,871.40

Finding the Fourth Proportional to 3,198.18, 4,412.37 and 1,871.40

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Solution

The fourth proportional to 3,198.18, 4,412.37 and 1,871.40 is: 2,581.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.18 : 4,412.37 = 1,871.40 : x
  2. Step 2: Convert to fraction form
    3,198.18/4,412.37 = 1,871.40/x
  3. Step 3: Cross multiply
    3,198.18x = 4,412.37 × 1,871.40
  4. Step 4: Simplify right side
    3,198.18x = 8,257,309.22
  5. Step 5: Solve for x
    x = 8,257,309.22/3,198.18
  6. Step 6: Final answer
    x = 2,581.88

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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.