Home / 3,105.56-4,285.66-1,708.31

Finding the Fourth Proportional to 3,105.56, 4,285.66 and 1,708.31

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Solution

The fourth proportional to 3,105.56, 4,285.66 and 1,708.31 is: 2,357.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.56 : 4,285.66 = 1,708.31 : x
  2. Step 2: Convert to fraction form
    3,105.56/4,285.66 = 1,708.31/x
  3. Step 3: Cross multiply
    3,105.56x = 4,285.66 × 1,708.31
  4. Step 4: Simplify right side
    3,105.56x = 7,321,205.86
  5. Step 5: Solve for x
    x = 7,321,205.86/3,105.56
  6. Step 6: Final answer
    x = 2,357.45

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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.