Home / 2,819.19-3,889.78-1,700.79

Finding the Fourth Proportional to 2,819.19, 3,889.78 and 1,700.79

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Solution

The fourth proportional to 2,819.19, 3,889.78 and 1,700.79 is: 2,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.19 : 3,889.78 = 1,700.79 : x
  2. Step 2: Convert to fraction form
    2,819.19/3,889.78 = 1,700.79/x
  3. Step 3: Cross multiply
    2,819.19x = 3,889.78 × 1,700.79
  4. Step 4: Simplify right side
    2,819.19x = 6,615,698.93
  5. Step 5: Solve for x
    x = 6,615,698.93/2,819.19
  6. Step 6: Final answer
    x = 2,346.67

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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.