Home / 4,729.80-7,086.42-4,221.30

Finding the Fourth Proportional to 4,729.80, 7,086.42 and 4,221.30

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Solution

The fourth proportional to 4,729.80, 7,086.42 and 4,221.30 is: 6,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,729.80 : 7,086.42 = 4,221.30 : x
  2. Step 2: Convert to fraction form
    4,729.80/7,086.42 = 4,221.30/x
  3. Step 3: Cross multiply
    4,729.80x = 7,086.42 × 4,221.30
  4. Step 4: Simplify right side
    4,729.80x = 29,913,904.75
  5. Step 5: Solve for x
    x = 29,913,904.75/4,729.80
  6. Step 6: Final answer
    x = 6,324.56

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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.