Home / 2,171.39-3,257.04-1,391.77

Finding the Fourth Proportional to 2,171.39, 3,257.04 and 1,391.77

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Solution

The fourth proportional to 2,171.39, 3,257.04 and 1,391.77 is: 2,087.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.39 : 3,257.04 = 1,391.77 : x
  2. Step 2: Convert to fraction form
    2,171.39/3,257.04 = 1,391.77/x
  3. Step 3: Cross multiply
    2,171.39x = 3,257.04 × 1,391.77
  4. Step 4: Simplify right side
    2,171.39x = 4,533,050.56
  5. Step 5: Solve for x
    x = 4,533,050.56/2,171.39
  6. Step 6: Final answer
    x = 2,087.63

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1.5x scale

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.