Home / 5,286.76-7,295.79-2,896.80

Finding the Fourth Proportional to 5,286.76, 7,295.79 and 2,896.80

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Solution

The fourth proportional to 5,286.76, 7,295.79 and 2,896.80 is: 3,997.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.76 : 7,295.79 = 2,896.80 : x
  2. Step 2: Convert to fraction form
    5,286.76/7,295.79 = 2,896.80/x
  3. Step 3: Cross multiply
    5,286.76x = 7,295.79 × 2,896.80
  4. Step 4: Simplify right side
    5,286.76x = 21,134,444.47
  5. Step 5: Solve for x
    x = 21,134,444.47/5,286.76
  6. Step 6: Final answer
    x = 3,997.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.