Home / 2,818.36-4,228.28-1,279

Finding the Fourth Proportional to 2,818.36, 4,228.28 and 1,279

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Solution

The fourth proportional to 2,818.36, 4,228.28 and 1,279 is: 1,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.36 : 4,228.28 = 1,279 : x
  2. Step 2: Convert to fraction form
    2,818.36/4,228.28 = 1,279/x
  3. Step 3: Cross multiply
    2,818.36x = 4,228.28 × 1,279
  4. Step 4: Simplify right side
    2,818.36x = 5,407,970.12
  5. Step 5: Solve for x
    x = 5,407,970.12/2,818.36
  6. Step 6: Final answer
    x = 1,918.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.