Home / 2,679.45-4,016.87-1,293.76

Finding the Fourth Proportional to 2,679.45, 4,016.87 and 1,293.76

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Solution

The fourth proportional to 2,679.45, 4,016.87 and 1,293.76 is: 1,939.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.45 : 4,016.87 = 1,293.76 : x
  2. Step 2: Convert to fraction form
    2,679.45/4,016.87 = 1,293.76/x
  3. Step 3: Cross multiply
    2,679.45x = 4,016.87 × 1,293.76
  4. Step 4: Simplify right side
    2,679.45x = 5,196,865.73
  5. Step 5: Solve for x
    x = 5,196,865.73/2,679.45
  6. Step 6: Final answer
    x = 1,939.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.