Home / 3,615.28-4,988.20-2,198.88

Finding the Fourth Proportional to 3,615.28, 4,988.20 and 2,198.88

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Solution

The fourth proportional to 3,615.28, 4,988.20 and 2,198.88 is: 3,033.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.28 : 4,988.20 = 2,198.88 : x
  2. Step 2: Convert to fraction form
    3,615.28/4,988.20 = 2,198.88/x
  3. Step 3: Cross multiply
    3,615.28x = 4,988.20 × 2,198.88
  4. Step 4: Simplify right side
    3,615.28x = 10,968,453.22
  5. Step 5: Solve for x
    x = 10,968,453.22/3,615.28
  6. Step 6: Final answer
    x = 3,033.92

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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.