Home / 3,930.75-5,424.44-2,358.86

Finding the Fourth Proportional to 3,930.75, 5,424.44 and 2,358.86

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Solution

The fourth proportional to 3,930.75, 5,424.44 and 2,358.86 is: 3,255.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.75 : 5,424.44 = 2,358.86 : x
  2. Step 2: Convert to fraction form
    3,930.75/5,424.44 = 2,358.86/x
  3. Step 3: Cross multiply
    3,930.75x = 5,424.44 × 2,358.86
  4. Step 4: Simplify right side
    3,930.75x = 12,795,455.62
  5. Step 5: Solve for x
    x = 12,795,455.62/3,930.75
  6. Step 6: Final answer
    x = 3,255.22

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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.