Home / 3,085.09-4,255.73-1,964.05

Finding the Fourth Proportional to 3,085.09, 4,255.73 and 1,964.05

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Solution

The fourth proportional to 3,085.09, 4,255.73 and 1,964.05 is: 2,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.09 : 4,255.73 = 1,964.05 : x
  2. Step 2: Convert to fraction form
    3,085.09/4,255.73 = 1,964.05/x
  3. Step 3: Cross multiply
    3,085.09x = 4,255.73 × 1,964.05
  4. Step 4: Simplify right side
    3,085.09x = 8,358,435.41
  5. Step 5: Solve for x
    x = 8,358,435.41/3,085.09
  6. Step 6: Final answer
    x = 2,709.30

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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.