Home / 2,819.08-3,887.96-2,112.58

Finding the Fourth Proportional to 2,819.08, 3,887.96 and 2,112.58

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Solution

The fourth proportional to 2,819.08, 3,887.96 and 2,112.58 is: 2,913.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.08 : 3,887.96 = 2,112.58 : x
  2. Step 2: Convert to fraction form
    2,819.08/3,887.96 = 2,112.58/x
  3. Step 3: Cross multiply
    2,819.08x = 3,887.96 × 2,112.58
  4. Step 4: Simplify right side
    2,819.08x = 8,213,622.10
  5. Step 5: Solve for x
    x = 8,213,622.10/2,819.08
  6. Step 6: Final answer
    x = 2,913.59

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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.