Home / 2,857.40-4,289.30-1,704.12

Finding the Fourth Proportional to 2,857.40, 4,289.30 and 1,704.12

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Solution

The fourth proportional to 2,857.40, 4,289.30 and 1,704.12 is: 2,558.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.40 : 4,289.30 = 1,704.12 : x
  2. Step 2: Convert to fraction form
    2,857.40/4,289.30 = 1,704.12/x
  3. Step 3: Cross multiply
    2,857.40x = 4,289.30 × 1,704.12
  4. Step 4: Simplify right side
    2,857.40x = 7,309,481.92
  5. Step 5: Solve for x
    x = 7,309,481.92/2,857.40
  6. Step 6: Final answer
    x = 2,558.09

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1.5x scale

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.