Home / 2,828.20-4,236.90-1,729.30

Finding the Fourth Proportional to 2,828.20, 4,236.90 and 1,729.30

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Solution

The fourth proportional to 2,828.20, 4,236.90 and 1,729.30 is: 2,590.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.20 : 4,236.90 = 1,729.30 : x
  2. Step 2: Convert to fraction form
    2,828.20/4,236.90 = 1,729.30/x
  3. Step 3: Cross multiply
    2,828.20x = 4,236.90 × 1,729.30
  4. Step 4: Simplify right side
    2,828.20x = 7,326,871.17
  5. Step 5: Solve for x
    x = 7,326,871.17/2,828.20
  6. Step 6: Final answer
    x = 2,590.65

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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.