Home / 5,455.20-8,182.80-1,993.80

Finding the Fourth Proportional to 5,455.20, 8,182.80 and 1,993.80

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Solution

The fourth proportional to 5,455.20, 8,182.80 and 1,993.80 is: 2,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.20 : 8,182.80 = 1,993.80 : x
  2. Step 2: Convert to fraction form
    5,455.20/8,182.80 = 1,993.80/x
  3. Step 3: Cross multiply
    5,455.20x = 8,182.80 × 1,993.80
  4. Step 4: Simplify right side
    5,455.20x = 16,314,866.64
  5. Step 5: Solve for x
    x = 16,314,866.64/5,455.20
  6. Step 6: Final answer
    x = 2,990.70

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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.