Home / 3,933.18-5,427.87-2,164.78

Finding the Fourth Proportional to 3,933.18, 5,427.87 and 2,164.78

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Solution

The fourth proportional to 3,933.18, 5,427.87 and 2,164.78 is: 2,987.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.18 : 5,427.87 = 2,164.78 : x
  2. Step 2: Convert to fraction form
    3,933.18/5,427.87 = 2,164.78/x
  3. Step 3: Cross multiply
    3,933.18x = 5,427.87 × 2,164.78
  4. Step 4: Simplify right side
    3,933.18x = 11,750,144.42
  5. Step 5: Solve for x
    x = 11,750,144.42/3,933.18
  6. Step 6: Final answer
    x = 2,987.44

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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.