Home / 2,958.81-4,079.34-2,171.49

Finding the Fourth Proportional to 2,958.81, 4,079.34 and 2,171.49

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Solution

The fourth proportional to 2,958.81, 4,079.34 and 2,171.49 is: 2,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,958.81 : 4,079.34 = 2,171.49 : x
  2. Step 2: Convert to fraction form
    2,958.81/4,079.34 = 2,171.49/x
  3. Step 3: Cross multiply
    2,958.81x = 4,079.34 × 2,171.49
  4. Step 4: Simplify right side
    2,958.81x = 8,858,246.02
  5. Step 5: Solve for x
    x = 8,858,246.02/2,958.81
  6. Step 6: Final answer
    x = 2,993.85

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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.