Home / 3,933.35-5,428.18-2,164.92

Finding the Fourth Proportional to 3,933.35, 5,428.18 and 2,164.92

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Solution

The fourth proportional to 3,933.35, 5,428.18 and 2,164.92 is: 2,987.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.35 : 5,428.18 = 2,164.92 : x
  2. Step 2: Convert to fraction form
    3,933.35/5,428.18 = 2,164.92/x
  3. Step 3: Cross multiply
    3,933.35x = 5,428.18 × 2,164.92
  4. Step 4: Simplify right side
    3,933.35x = 11,751,575.45
  5. Step 5: Solve for x
    x = 11,751,575.45/3,933.35
  6. Step 6: Final answer
    x = 2,987.68

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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.