Home / 6,629.70-9,149.72-3,977.76

Finding the Fourth Proportional to 6,629.70, 9,149.72 and 3,977.76

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Solution

The fourth proportional to 6,629.70, 9,149.72 and 3,977.76 is: 5,489.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,629.70 : 9,149.72 = 3,977.76 : x
  2. Step 2: Convert to fraction form
    6,629.70/9,149.72 = 3,977.76/x
  3. Step 3: Cross multiply
    6,629.70x = 9,149.72 × 3,977.76
  4. Step 4: Simplify right side
    6,629.70x = 36,395,370.34
  5. Step 5: Solve for x
    x = 36,395,370.34/6,629.70
  6. Step 6: Final answer
    x = 5,489.75

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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.