Home / 6,629.80-9,149.22-3,977.32

Finding the Fourth Proportional to 6,629.80, 9,149.22 and 3,977.32

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Solution

The fourth proportional to 6,629.80, 9,149.22 and 3,977.32 is: 5,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,629.80 : 9,149.22 = 3,977.32 : x
  2. Step 2: Convert to fraction form
    6,629.80/9,149.22 = 3,977.32/x
  3. Step 3: Cross multiply
    6,629.80x = 9,149.22 × 3,977.32
  4. Step 4: Simplify right side
    6,629.80x = 36,389,375.69
  5. Step 5: Solve for x
    x = 36,389,375.69/6,629.80
  6. Step 6: Final answer
    x = 5,488.76

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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.