Home / 3,924.54-5,415.96-2,156.25

Finding the Fourth Proportional to 3,924.54, 5,415.96 and 2,156.25

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Solution

The fourth proportional to 3,924.54, 5,415.96 and 2,156.25 is: 2,975.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.54 : 5,415.96 = 2,156.25 : x
  2. Step 2: Convert to fraction form
    3,924.54/5,415.96 = 2,156.25/x
  3. Step 3: Cross multiply
    3,924.54x = 5,415.96 × 2,156.25
  4. Step 4: Simplify right side
    3,924.54x = 11,678,163.75
  5. Step 5: Solve for x
    x = 11,678,163.75/3,924.54
  6. Step 6: Final answer
    x = 2,975.68

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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.