Home / 2,155.69-3,233.54-1,425.12

Finding the Fourth Proportional to 2,155.69, 3,233.54 and 1,425.12

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Solution

The fourth proportional to 2,155.69, 3,233.54 and 1,425.12 is: 2,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.69 : 3,233.54 = 1,425.12 : x
  2. Step 2: Convert to fraction form
    2,155.69/3,233.54 = 1,425.12/x
  3. Step 3: Cross multiply
    2,155.69x = 3,233.54 × 1,425.12
  4. Step 4: Simplify right side
    2,155.69x = 4,608,182.52
  5. Step 5: Solve for x
    x = 4,608,182.52/2,155.69
  6. Step 6: Final answer
    x = 2,137.68

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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.