Home / 5,121.32-7,679.41-2,984.87

Finding the Fourth Proportional to 5,121.32, 7,679.41 and 2,984.87

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Solution

The fourth proportional to 5,121.32, 7,679.41 and 2,984.87 is: 4,475.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.32 : 7,679.41 = 2,984.87 : x
  2. Step 2: Convert to fraction form
    5,121.32/7,679.41 = 2,984.87/x
  3. Step 3: Cross multiply
    5,121.32x = 7,679.41 × 2,984.87
  4. Step 4: Simplify right side
    5,121.32x = 22,922,046.26
  5. Step 5: Solve for x
    x = 22,922,046.26/5,121.32
  6. Step 6: Final answer
    x = 4,475.81

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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.