Home / 5,218.62-7,201.78-3,122.34

Finding the Fourth Proportional to 5,218.62, 7,201.78 and 3,122.34

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Solution

The fourth proportional to 5,218.62, 7,201.78 and 3,122.34 is: 4,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.62 : 7,201.78 = 3,122.34 : x
  2. Step 2: Convert to fraction form
    5,218.62/7,201.78 = 3,122.34/x
  3. Step 3: Cross multiply
    5,218.62x = 7,201.78 × 3,122.34
  4. Step 4: Simplify right side
    5,218.62x = 22,486,405.77
  5. Step 5: Solve for x
    x = 22,486,405.77/5,218.62
  6. Step 6: Final answer
    x = 4,308.88

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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.