Home / 3,932.96-5,428.42-2,255.36

Finding the Fourth Proportional to 3,932.96, 5,428.42 and 2,255.36

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Solution

The fourth proportional to 3,932.96, 5,428.42 and 2,255.36 is: 3,112.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.96 : 5,428.42 = 2,255.36 : x
  2. Step 2: Convert to fraction form
    3,932.96/5,428.42 = 2,255.36/x
  3. Step 3: Cross multiply
    3,932.96x = 5,428.42 × 2,255.36
  4. Step 4: Simplify right side
    3,932.96x = 12,243,041.33
  5. Step 5: Solve for x
    x = 12,243,041.33/3,932.96
  6. Step 6: Final answer
    x = 3,112.93

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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.