Home / 8,162.48-11,243.22-6,390.92

Finding the Fourth Proportional to 8,162.48, 11,243.22 and 6,390.92

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Solution

The fourth proportional to 8,162.48, 11,243.22 and 6,390.92 is: 8,803.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,162.48 : 11,243.22 = 6,390.92 : x
  2. Step 2: Convert to fraction form
    8,162.48/11,243.22 = 6,390.92/x
  3. Step 3: Cross multiply
    8,162.48x = 11,243.22 × 6,390.92
  4. Step 4: Simplify right side
    8,162.48x = 71,854,519.56
  5. Step 5: Solve for x
    x = 71,854,519.56/8,162.48
  6. Step 6: Final answer
    x = 8,803.03

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Half scale
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Double scale
Find fourth proportional to 8,163.48, 11,244.60 and 6,391.92
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.