Home / 2,789.13-4,178.89-1,965.67

Finding the Fourth Proportional to 2,789.13, 4,178.89 and 1,965.67

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Solution

The fourth proportional to 2,789.13, 4,178.89 and 1,965.67 is: 2,945.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.13 : 4,178.89 = 1,965.67 : x
  2. Step 2: Convert to fraction form
    2,789.13/4,178.89 = 1,965.67/x
  3. Step 3: Cross multiply
    2,789.13x = 4,178.89 × 1,965.67
  4. Step 4: Simplify right side
    2,789.13x = 8,214,310.72
  5. Step 5: Solve for x
    x = 8,214,310.72/2,789.13
  6. Step 6: Final answer
    x = 2,945.11

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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.