Home / 7,789.28-11,676.96-2,857.76

Finding the Fourth Proportional to 7,789.28, 11,676.96 and 2,857.76

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Solution

The fourth proportional to 7,789.28, 11,676.96 and 2,857.76 is: 4,284.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.28 : 11,676.96 = 2,857.76 : x
  2. Step 2: Convert to fraction form
    7,789.28/11,676.96 = 2,857.76/x
  3. Step 3: Cross multiply
    7,789.28x = 11,676.96 × 2,857.76
  4. Step 4: Simplify right side
    7,789.28x = 33,369,949.21
  5. Step 5: Solve for x
    x = 33,369,949.21/7,789.28
  6. Step 6: Final answer
    x = 4,284.09

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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.