Home / 4,930.80-7,385.40-3,958.80

Finding the Fourth Proportional to 4,930.80, 7,385.40 and 3,958.80

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Solution

The fourth proportional to 4,930.80, 7,385.40 and 3,958.80 is: 5,929.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,930.80 : 7,385.40 = 3,958.80 : x
  2. Step 2: Convert to fraction form
    4,930.80/7,385.40 = 3,958.80/x
  3. Step 3: Cross multiply
    4,930.80x = 7,385.40 × 3,958.80
  4. Step 4: Simplify right side
    4,930.80x = 29,237,321.52
  5. Step 5: Solve for x
    x = 29,237,321.52/4,930.80
  6. Step 6: Final answer
    x = 5,929.53

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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.