Home / 2,021.20-2,789.08-1,136.88

Finding the Fourth Proportional to 2,021.20, 2,789.08 and 1,136.88

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Solution

The fourth proportional to 2,021.20, 2,789.08 and 1,136.88 is: 1,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.20 : 2,789.08 = 1,136.88 : x
  2. Step 2: Convert to fraction form
    2,021.20/2,789.08 = 1,136.88/x
  3. Step 3: Cross multiply
    2,021.20x = 2,789.08 × 1,136.88
  4. Step 4: Simplify right side
    2,021.20x = 3,170,846.43
  5. Step 5: Solve for x
    x = 3,170,846.43/2,021.20
  6. Step 6: Final answer
    x = 1,568.80

Related Problems

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.