Home / 5,135.78-7,086.83-3,792.09

Finding the Fourth Proportional to 5,135.78, 7,086.83 and 3,792.09

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Solution

The fourth proportional to 5,135.78, 7,086.83 and 3,792.09 is: 5,232.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.78 : 7,086.83 = 3,792.09 : x
  2. Step 2: Convert to fraction form
    5,135.78/7,086.83 = 3,792.09/x
  3. Step 3: Cross multiply
    5,135.78x = 7,086.83 × 3,792.09
  4. Step 4: Simplify right side
    5,135.78x = 26,873,878.21
  5. Step 5: Solve for x
    x = 26,873,878.21/5,135.78
  6. Step 6: Final answer
    x = 5,232.68

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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.