Home / 2,890.20-4,327.92-1,425.72

Finding the Fourth Proportional to 2,890.20, 4,327.92 and 1,425.72

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Solution

The fourth proportional to 2,890.20, 4,327.92 and 1,425.72 is: 2,134.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.20 : 4,327.92 = 1,425.72 : x
  2. Step 2: Convert to fraction form
    2,890.20/4,327.92 = 1,425.72/x
  3. Step 3: Cross multiply
    2,890.20x = 4,327.92 × 1,425.72
  4. Step 4: Simplify right side
    2,890.20x = 6,170,402.10
  5. Step 5: Solve for x
    x = 6,170,402.10/2,890.20
  6. Step 6: Final answer
    x = 2,134.94

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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.