Home / 8,136.28-11,220.42-5,786.20

Finding the Fourth Proportional to 8,136.28, 11,220.42 and 5,786.20

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Solution

The fourth proportional to 8,136.28, 11,220.42 and 5,786.20 is: 7,979.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.28 : 11,220.42 = 5,786.20 : x
  2. Step 2: Convert to fraction form
    8,136.28/11,220.42 = 5,786.20/x
  3. Step 3: Cross multiply
    8,136.28x = 11,220.42 × 5,786.20
  4. Step 4: Simplify right side
    8,136.28x = 64,923,594.20
  5. Step 5: Solve for x
    x = 64,923,594.20/8,136.28
  6. Step 6: Final answer
    x = 7,979.52

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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.