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Finding the Fourth Proportional to 3,392.55, 5,081.27 and 1,930.77

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Solution

The fourth proportional to 3,392.55, 5,081.27 and 1,930.77 is: 2,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.55 : 5,081.27 = 1,930.77 : x
  2. Step 2: Convert to fraction form
    3,392.55/5,081.27 = 1,930.77/x
  3. Step 3: Cross multiply
    3,392.55x = 5,081.27 × 1,930.77
  4. Step 4: Simplify right side
    3,392.55x = 9,810,754.02
  5. Step 5: Solve for x
    x = 9,810,754.02/3,392.55
  6. Step 6: Final answer
    x = 2,891.85

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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.