Home / 2,819.64-4,230.15-1,988.33

Finding the Fourth Proportional to 2,819.64, 4,230.15 and 1,988.33

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Solution

The fourth proportional to 2,819.64, 4,230.15 and 1,988.33 is: 2,982.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.64 : 4,230.15 = 1,988.33 : x
  2. Step 2: Convert to fraction form
    2,819.64/4,230.15 = 1,988.33/x
  3. Step 3: Cross multiply
    2,819.64x = 4,230.15 × 1,988.33
  4. Step 4: Simplify right side
    2,819.64x = 8,410,913.00
  5. Step 5: Solve for x
    x = 8,410,913.00/2,819.64
  6. Step 6: Final answer
    x = 2,982.97

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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.