Home / 2,198.28-3,031.92-1,313.91

Finding the Fourth Proportional to 2,198.28, 3,031.92 and 1,313.91

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Solution

The fourth proportional to 2,198.28, 3,031.92 and 1,313.91 is: 1,812.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.28 : 3,031.92 = 1,313.91 : x
  2. Step 2: Convert to fraction form
    2,198.28/3,031.92 = 1,313.91/x
  3. Step 3: Cross multiply
    2,198.28x = 3,031.92 × 1,313.91
  4. Step 4: Simplify right side
    2,198.28x = 3,983,670.01
  5. Step 5: Solve for x
    x = 3,983,670.01/2,198.28
  6. Step 6: Final answer
    x = 1,812.18

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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.