Home / 3,185.45-4,778.25-1,210.82

Finding the Fourth Proportional to 3,185.45, 4,778.25 and 1,210.82

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Solution

The fourth proportional to 3,185.45, 4,778.25 and 1,210.82 is: 1,816.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.45 : 4,778.25 = 1,210.82 : x
  2. Step 2: Convert to fraction form
    3,185.45/4,778.25 = 1,210.82/x
  3. Step 3: Cross multiply
    3,185.45x = 4,778.25 × 1,210.82
  4. Step 4: Simplify right side
    3,185.45x = 5,785,621.06
  5. Step 5: Solve for x
    x = 5,785,621.06/3,185.45
  6. Step 6: Final answer
    x = 1,816.27

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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.