Home / 3,933.96-5,429.32-2,255.90

Finding the Fourth Proportional to 3,933.96, 5,429.32 and 2,255.90

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Solution

The fourth proportional to 3,933.96, 5,429.32 and 2,255.90 is: 3,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.96 : 5,429.32 = 2,255.90 : x
  2. Step 2: Convert to fraction form
    3,933.96/5,429.32 = 2,255.90/x
  3. Step 3: Cross multiply
    3,933.96x = 5,429.32 × 2,255.90
  4. Step 4: Simplify right side
    3,933.96x = 12,248,002.99
  5. Step 5: Solve for x
    x = 12,248,002.99/3,933.96
  6. Step 6: Final answer
    x = 3,113.40

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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.