Home / 5,453.98-8,180.16-1,991.23

Finding the Fourth Proportional to 5,453.98, 8,180.16 and 1,991.23

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Solution

The fourth proportional to 5,453.98, 8,180.16 and 1,991.23 is: 2,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,453.98 : 8,180.16 = 1,991.23 : x
  2. Step 2: Convert to fraction form
    5,453.98/8,180.16 = 1,991.23/x
  3. Step 3: Cross multiply
    5,453.98x = 8,180.16 × 1,991.23
  4. Step 4: Simplify right side
    5,453.98x = 16,288,580.00
  5. Step 5: Solve for x
    x = 16,288,580.00/5,453.98
  6. Step 6: Final answer
    x = 2,986.55

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Double scale
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Similar ratio
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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.