Home / 2,825.20-4,234.20-2,172.70

Finding the Fourth Proportional to 2,825.20, 4,234.20 and 2,172.70

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Solution

The fourth proportional to 2,825.20, 4,234.20 and 2,172.70 is: 3,256.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.20 : 4,234.20 = 2,172.70 : x
  2. Step 2: Convert to fraction form
    2,825.20/4,234.20 = 2,172.70/x
  3. Step 3: Cross multiply
    2,825.20x = 4,234.20 × 2,172.70
  4. Step 4: Simplify right side
    2,825.20x = 9,199,646.34
  5. Step 5: Solve for x
    x = 9,199,646.34/2,825.20
  6. Step 6: Final answer
    x = 3,256.28

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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.