Home / 3,928.50-5,892.75-1,331.51

Finding the Fourth Proportional to 3,928.50, 5,892.75 and 1,331.51

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Solution

The fourth proportional to 3,928.50, 5,892.75 and 1,331.51 is: 1,997.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.50 : 5,892.75 = 1,331.51 : x
  2. Step 2: Convert to fraction form
    3,928.50/5,892.75 = 1,331.51/x
  3. Step 3: Cross multiply
    3,928.50x = 5,892.75 × 1,331.51
  4. Step 4: Simplify right side
    3,928.50x = 7,846,226.09
  5. Step 5: Solve for x
    x = 7,846,226.09/3,928.50
  6. Step 6: Final answer
    x = 1,997.26

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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.