Home / 6,128.78-9,197.26-3,939.08

Finding the Fourth Proportional to 6,128.78, 9,197.26 and 3,939.08

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Solution

The fourth proportional to 6,128.78, 9,197.26 and 3,939.08 is: 5,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.78 : 9,197.26 = 3,939.08 : x
  2. Step 2: Convert to fraction form
    6,128.78/9,197.26 = 3,939.08/x
  3. Step 3: Cross multiply
    6,128.78x = 9,197.26 × 3,939.08
  4. Step 4: Simplify right side
    6,128.78x = 36,228,742.92
  5. Step 5: Solve for x
    x = 36,228,742.92/6,128.78
  6. Step 6: Final answer
    x = 5,911.25

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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.