Home / 3,119.75-4,305.96-2,125.42

Finding the Fourth Proportional to 3,119.75, 4,305.96 and 2,125.42

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Solution

The fourth proportional to 3,119.75, 4,305.96 and 2,125.42 is: 2,933.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.75 : 4,305.96 = 2,125.42 : x
  2. Step 2: Convert to fraction form
    3,119.75/4,305.96 = 2,125.42/x
  3. Step 3: Cross multiply
    3,119.75x = 4,305.96 × 2,125.42
  4. Step 4: Simplify right side
    3,119.75x = 9,151,962.88
  5. Step 5: Solve for x
    x = 9,151,962.88/3,119.75
  6. Step 6: Final answer
    x = 2,933.56

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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.