Home / 2,859.12-4,288.34-1,940.58

Finding the Fourth Proportional to 2,859.12, 4,288.34 and 1,940.58

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Solution

The fourth proportional to 2,859.12, 4,288.34 and 1,940.58 is: 2,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.12 : 4,288.34 = 1,940.58 : x
  2. Step 2: Convert to fraction form
    2,859.12/4,288.34 = 1,940.58/x
  3. Step 3: Cross multiply
    2,859.12x = 4,288.34 × 1,940.58
  4. Step 4: Simplify right side
    2,859.12x = 8,321,866.84
  5. Step 5: Solve for x
    x = 8,321,866.84/2,859.12
  6. Step 6: Final answer
    x = 2,910.64

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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.