Home / 4,780.31-7,168.01-2,145.56

Finding the Fourth Proportional to 4,780.31, 7,168.01 and 2,145.56

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Solution

The fourth proportional to 4,780.31, 7,168.01 and 2,145.56 is: 3,217.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.31 : 7,168.01 = 2,145.56 : x
  2. Step 2: Convert to fraction form
    4,780.31/7,168.01 = 2,145.56/x
  3. Step 3: Cross multiply
    4,780.31x = 7,168.01 × 2,145.56
  4. Step 4: Simplify right side
    4,780.31x = 15,379,348.97
  5. Step 5: Solve for x
    x = 15,379,348.97/4,780.31
  6. Step 6: Final answer
    x = 3,217.23

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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.