Home / 9,289.92-12,817.62-8,108.76

Finding the Fourth Proportional to 9,289.92, 12,817.62 and 8,108.76

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Solution

The fourth proportional to 9,289.92, 12,817.62 and 8,108.76 is: 11,187.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.92 : 12,817.62 = 8,108.76 : x
  2. Step 2: Convert to fraction form
    9,289.92/12,817.62 = 8,108.76/x
  3. Step 3: Cross multiply
    9,289.92x = 12,817.62 × 8,108.76
  4. Step 4: Simplify right side
    9,289.92x = 103,935,004.35
  5. Step 5: Solve for x
    x = 103,935,004.35/9,289.92
  6. Step 6: Final answer
    x = 11,187.93

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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.