Home / 2,021.19-2,789.07-1,136.87

Finding the Fourth Proportional to 2,021.19, 2,789.07 and 1,136.87

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Solution

The fourth proportional to 2,021.19, 2,789.07 and 1,136.87 is: 1,568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.19 : 2,789.07 = 1,136.87 : x
  2. Step 2: Convert to fraction form
    2,021.19/2,789.07 = 1,136.87/x
  3. Step 3: Cross multiply
    2,021.19x = 2,789.07 × 1,136.87
  4. Step 4: Simplify right side
    2,021.19x = 3,170,802.26
  5. Step 5: Solve for x
    x = 3,170,802.26/2,021.19
  6. Step 6: Final answer
    x = 1,568.78

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Half scale
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Double scale
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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.