Home / 3,933.20-5,427.78-2,164.77

Finding the Fourth Proportional to 3,933.20, 5,427.78 and 2,164.77

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Solution

The fourth proportional to 3,933.20, 5,427.78 and 2,164.77 is: 2,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.20 : 5,427.78 = 2,164.77 : x
  2. Step 2: Convert to fraction form
    3,933.20/5,427.78 = 2,164.77/x
  3. Step 3: Cross multiply
    3,933.20x = 5,427.78 × 2,164.77
  4. Step 4: Simplify right side
    3,933.20x = 11,749,902.10
  5. Step 5: Solve for x
    x = 11,749,902.10/3,933.20
  6. Step 6: Final answer
    x = 2,987.36

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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.