Home / 7,789.59-11,685.92-2,859.28

Finding the Fourth Proportional to 7,789.59, 11,685.92 and 2,859.28

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Solution

The fourth proportional to 7,789.59, 11,685.92 and 2,859.28 is: 4,289.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.59 : 11,685.92 = 2,859.28 : x
  2. Step 2: Convert to fraction form
    7,789.59/11,685.92 = 2,859.28/x
  3. Step 3: Cross multiply
    7,789.59x = 11,685.92 × 2,859.28
  4. Step 4: Simplify right side
    7,789.59x = 33,413,273.83
  5. Step 5: Solve for x
    x = 33,413,273.83/7,789.59
  6. Step 6: Final answer
    x = 4,289.48

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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.