Home / 2,318.20-3,198.90-1,270.28

Finding the Fourth Proportional to 2,318.20, 3,198.90 and 1,270.28

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Solution

The fourth proportional to 2,318.20, 3,198.90 and 1,270.28 is: 1,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.20 : 3,198.90 = 1,270.28 : x
  2. Step 2: Convert to fraction form
    2,318.20/3,198.90 = 1,270.28/x
  3. Step 3: Cross multiply
    2,318.20x = 3,198.90 × 1,270.28
  4. Step 4: Simplify right side
    2,318.20x = 4,063,498.69
  5. Step 5: Solve for x
    x = 4,063,498.69/2,318.20
  6. Step 6: Final answer
    x = 1,752.87

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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.