Home / 6,629.76-9,149.16-3,977.28

Finding the Fourth Proportional to 6,629.76, 9,149.16 and 3,977.28

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Solution

The fourth proportional to 6,629.76, 9,149.16 and 3,977.28 is: 5,488.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,629.76 : 9,149.16 = 3,977.28 : x
  2. Step 2: Convert to fraction form
    6,629.76/9,149.16 = 3,977.28/x
  3. Step 3: Cross multiply
    6,629.76x = 9,149.16 × 3,977.28
  4. Step 4: Simplify right side
    6,629.76x = 36,388,771.08
  5. Step 5: Solve for x
    x = 36,388,771.08/6,629.76
  6. Step 6: Final answer
    x = 5,488.70

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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.