Home / 2,198.40-3,033.71-1,313.67

Finding the Fourth Proportional to 2,198.40, 3,033.71 and 1,313.67

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Solution

The fourth proportional to 2,198.40, 3,033.71 and 1,313.67 is: 1,812.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198.40 : 3,033.71 = 1,313.67 : x
  2. Step 2: Convert to fraction form
    2,198.40/3,033.71 = 1,313.67/x
  3. Step 3: Cross multiply
    2,198.40x = 3,033.71 × 1,313.67
  4. Step 4: Simplify right side
    2,198.40x = 3,985,293.82
  5. Step 5: Solve for x
    x = 3,985,293.82/2,198.40
  6. Step 6: Final answer
    x = 1,812.82

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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.