Home / 1,819.36-2,512.80-1,228.88

Finding the Fourth Proportional to 1,819.36, 2,512.80 and 1,228.88

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Solution

The fourth proportional to 1,819.36, 2,512.80 and 1,228.88 is: 1,697.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.36 : 2,512.80 = 1,228.88 : x
  2. Step 2: Convert to fraction form
    1,819.36/2,512.80 = 1,228.88/x
  3. Step 3: Cross multiply
    1,819.36x = 2,512.80 × 1,228.88
  4. Step 4: Simplify right side
    1,819.36x = 3,087,929.66
  5. Step 5: Solve for x
    x = 3,087,929.66/1,819.36
  6. Step 6: Final answer
    x = 1,697.26

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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.