Home / 5,221.42-7,835.20-1,936.80

Finding the Fourth Proportional to 5,221.42, 7,835.20 and 1,936.80

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Solution

The fourth proportional to 5,221.42, 7,835.20 and 1,936.80 is: 2,906.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.42 : 7,835.20 = 1,936.80 : x
  2. Step 2: Convert to fraction form
    5,221.42/7,835.20 = 1,936.80/x
  3. Step 3: Cross multiply
    5,221.42x = 7,835.20 × 1,936.80
  4. Step 4: Simplify right side
    5,221.42x = 15,175,210.52
  5. Step 5: Solve for x
    x = 15,175,210.52/5,221.42
  6. Step 6: Final answer
    x = 2,906.34

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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.