Home / 7,789.44-11,678.40-2,856.48

Finding the Fourth Proportional to 7,789.44, 11,678.40 and 2,856.48

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Solution

The fourth proportional to 7,789.44, 11,678.40 and 2,856.48 is: 4,282.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.44 : 11,678.40 = 2,856.48 : x
  2. Step 2: Convert to fraction form
    7,789.44/11,678.40 = 2,856.48/x
  3. Step 3: Cross multiply
    7,789.44x = 11,678.40 × 2,856.48
  4. Step 4: Simplify right side
    7,789.44x = 33,359,116.03
  5. Step 5: Solve for x
    x = 33,359,116.03/7,789.44
  6. Step 6: Final answer
    x = 4,282.61

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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.