Home / 3,933.12-5,427.48-2,164.68

Finding the Fourth Proportional to 3,933.12, 5,427.48 and 2,164.68

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Solution

The fourth proportional to 3,933.12, 5,427.48 and 2,164.68 is: 2,987.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.12 : 5,427.48 = 2,164.68 : x
  2. Step 2: Convert to fraction form
    3,933.12/5,427.48 = 2,164.68/x
  3. Step 3: Cross multiply
    3,933.12x = 5,427.48 × 2,164.68
  4. Step 4: Simplify right side
    3,933.12x = 11,748,757.41
  5. Step 5: Solve for x
    x = 11,748,757.41/3,933.12
  6. Step 6: Final answer
    x = 2,987.13

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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.