Home / 8,160.48-11,240.46-6,388.92

Finding the Fourth Proportional to 8,160.48, 11,240.46 and 6,388.92

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Solution

The fourth proportional to 8,160.48, 11,240.46 and 6,388.92 is: 8,800.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,160.48 : 11,240.46 = 6,388.92 : x
  2. Step 2: Convert to fraction form
    8,160.48/11,240.46 = 6,388.92/x
  3. Step 3: Cross multiply
    8,160.48x = 11,240.46 × 6,388.92
  4. Step 4: Simplify right side
    8,160.48x = 71,814,399.70
  5. Step 5: Solve for x
    x = 71,814,399.70/8,160.48
  6. Step 6: Final answer
    x = 8,800.27

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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.