Home / 5,209.39-7,190.46-2,972.48

Finding the Fourth Proportional to 5,209.39, 7,190.46 and 2,972.48

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Solution

The fourth proportional to 5,209.39, 7,190.46 and 2,972.48 is: 4,102.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.39 : 7,190.46 = 2,972.48 : x
  2. Step 2: Convert to fraction form
    5,209.39/7,190.46 = 2,972.48/x
  3. Step 3: Cross multiply
    5,209.39x = 7,190.46 × 2,972.48
  4. Step 4: Simplify right side
    5,209.39x = 21,373,498.54
  5. Step 5: Solve for x
    x = 21,373,498.54/5,209.39
  6. Step 6: Final answer
    x = 4,102.88

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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.