Home / 3,924.78-5,416.29-2,156.37

Finding the Fourth Proportional to 3,924.78, 5,416.29 and 2,156.37

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Solution

The fourth proportional to 3,924.78, 5,416.29 and 2,156.37 is: 2,975.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.78 : 5,416.29 = 2,156.37 : x
  2. Step 2: Convert to fraction form
    3,924.78/5,416.29 = 2,156.37/x
  3. Step 3: Cross multiply
    3,924.78x = 5,416.29 × 2,156.37
  4. Step 4: Simplify right side
    3,924.78x = 11,679,525.27
  5. Step 5: Solve for x
    x = 11,679,525.27/3,924.78
  6. Step 6: Final answer
    x = 2,975.84

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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.