Home / 3,086.37-4,628.73-865.07

Finding the Fourth Proportional to 3,086.37, 4,628.73 and 865.07

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Solution

The fourth proportional to 3,086.37, 4,628.73 and 865.07 is: 1,297.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.37 : 4,628.73 = 865.07 : x
  2. Step 2: Convert to fraction form
    3,086.37/4,628.73 = 865.07/x
  3. Step 3: Cross multiply
    3,086.37x = 4,628.73 × 865.07
  4. Step 4: Simplify right side
    3,086.37x = 4,004,181.07
  5. Step 5: Solve for x
    x = 4,004,181.07/3,086.37
  6. Step 6: Final answer
    x = 1,297.38

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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.