Home / 2,155.52-3,234.90-1,424.84

Finding the Fourth Proportional to 2,155.52, 3,234.90 and 1,424.84

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Solution

The fourth proportional to 2,155.52, 3,234.90 and 1,424.84 is: 2,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.52 : 3,234.90 = 1,424.84 : x
  2. Step 2: Convert to fraction form
    2,155.52/3,234.90 = 1,424.84/x
  3. Step 3: Cross multiply
    2,155.52x = 3,234.90 × 1,424.84
  4. Step 4: Simplify right side
    2,155.52x = 4,609,214.92
  5. Step 5: Solve for x
    x = 4,609,214.92/2,155.52
  6. Step 6: Final answer
    x = 2,138.33

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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.