Home / 2,780.52-4,172.00-2,163.30

Finding the Fourth Proportional to 2,780.52, 4,172.00 and 2,163.30

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Solution

The fourth proportional to 2,780.52, 4,172.00 and 2,163.30 is: 3,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.52 : 4,172.00 = 2,163.30 : x
  2. Step 2: Convert to fraction form
    2,780.52/4,172.00 = 2,163.30/x
  3. Step 3: Cross multiply
    2,780.52x = 4,172.00 × 2,163.30
  4. Step 4: Simplify right side
    2,780.52x = 9,025,276.78
  5. Step 5: Solve for x
    x = 9,025,276.78/2,780.52
  6. Step 6: Final answer
    x = 3,245.90

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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.