Home / 3,119.46-4,305.55-1,984.90

Finding the Fourth Proportional to 3,119.46, 4,305.55 and 1,984.90

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Solution

The fourth proportional to 3,119.46, 4,305.55 and 1,984.90 is: 2,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.46 : 4,305.55 = 1,984.90 : x
  2. Step 2: Convert to fraction form
    3,119.46/4,305.55 = 1,984.90/x
  3. Step 3: Cross multiply
    3,119.46x = 4,305.55 × 1,984.90
  4. Step 4: Simplify right side
    3,119.46x = 8,546,076.27
  5. Step 5: Solve for x
    x = 8,546,076.27/3,119.46
  6. Step 6: Final answer
    x = 2,739.60

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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.