Home / 4,261.80-5,879.60-3,145.40

Finding the Fourth Proportional to 4,261.80, 5,879.60 and 3,145.40

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Solution

The fourth proportional to 4,261.80, 5,879.60 and 3,145.40 is: 4,339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,261.80 : 5,879.60 = 3,145.40 : x
  2. Step 2: Convert to fraction form
    4,261.80/5,879.60 = 3,145.40/x
  3. Step 3: Cross multiply
    4,261.80x = 5,879.60 × 3,145.40
  4. Step 4: Simplify right side
    4,261.80x = 18,493,693.84
  5. Step 5: Solve for x
    x = 18,493,693.84/4,261.80
  6. Step 6: Final answer
    x = 4,339.41

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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.