Home / 2,669.52-4,004.37-820.68

Finding the Fourth Proportional to 2,669.52, 4,004.37 and 820.68

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Solution

The fourth proportional to 2,669.52, 4,004.37 and 820.68 is: 1,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.52 : 4,004.37 = 820.68 : x
  2. Step 2: Convert to fraction form
    2,669.52/4,004.37 = 820.68/x
  3. Step 3: Cross multiply
    2,669.52x = 4,004.37 × 820.68
  4. Step 4: Simplify right side
    2,669.52x = 3,286,306.37
  5. Step 5: Solve for x
    x = 3,286,306.37/2,669.52
  6. Step 6: Final answer
    x = 1,231.05

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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.