Home / 3,924.56-5,408.52-3,138.32

Finding the Fourth Proportional to 3,924.56, 5,408.52 and 3,138.32

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Solution

The fourth proportional to 3,924.56, 5,408.52 and 3,138.32 is: 4,324.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.56 : 5,408.52 = 3,138.32 : x
  2. Step 2: Convert to fraction form
    3,924.56/5,408.52 = 3,138.32/x
  3. Step 3: Cross multiply
    3,924.56x = 5,408.52 × 3,138.32
  4. Step 4: Simplify right side
    3,924.56x = 16,973,666.49
  5. Step 5: Solve for x
    x = 16,973,666.49/3,924.56
  6. Step 6: Final answer
    x = 4,324.99

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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.