Home / 3,406.80-5,110.86-1,185.56

Finding the Fourth Proportional to 3,406.80, 5,110.86 and 1,185.56

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Solution

The fourth proportional to 3,406.80, 5,110.86 and 1,185.56 is: 1,778.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,406.80 : 5,110.86 = 1,185.56 : x
  2. Step 2: Convert to fraction form
    3,406.80/5,110.86 = 1,185.56/x
  3. Step 3: Cross multiply
    3,406.80x = 5,110.86 × 1,185.56
  4. Step 4: Simplify right side
    3,406.80x = 6,059,231.18
  5. Step 5: Solve for x
    x = 6,059,231.18/3,406.80
  6. Step 6: Final answer
    x = 1,778.57

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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.