Home / 8,146.24-11,234.38-6,889.92

Finding the Fourth Proportional to 8,146.24, 11,234.38 and 6,889.92

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Solution

The fourth proportional to 8,146.24, 11,234.38 and 6,889.92 is: 9,501.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.24 : 11,234.38 = 6,889.92 : x
  2. Step 2: Convert to fraction form
    8,146.24/11,234.38 = 6,889.92/x
  3. Step 3: Cross multiply
    8,146.24x = 11,234.38 × 6,889.92
  4. Step 4: Simplify right side
    8,146.24x = 77,403,979.45
  5. Step 5: Solve for x
    x = 77,403,979.45/8,146.24
  6. Step 6: Final answer
    x = 9,501.80

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Half scale
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Double scale
Find fourth proportional to 8,147.24, 11,235.76 and 6,890.92
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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.