Home / 5,455.60-8,170.44-3,891.76

Finding the Fourth Proportional to 5,455.60, 8,170.44 and 3,891.76

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Solution

The fourth proportional to 5,455.60, 8,170.44 and 3,891.76 is: 5,828.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.60 : 8,170.44 = 3,891.76 : x
  2. Step 2: Convert to fraction form
    5,455.60/8,170.44 = 3,891.76/x
  3. Step 3: Cross multiply
    5,455.60x = 8,170.44 × 3,891.76
  4. Step 4: Simplify right side
    5,455.60x = 31,797,391.57
  5. Step 5: Solve for x
    x = 31,797,391.57/5,455.60
  6. Step 6: Final answer
    x = 5,828.39

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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.