Home / 8,128.92-11,217.88-4,402.92

Finding the Fourth Proportional to 8,128.92, 11,217.88 and 4,402.92

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Solution

The fourth proportional to 8,128.92, 11,217.88 and 4,402.92 is: 6,076.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.92 : 11,217.88 = 4,402.92 : x
  2. Step 2: Convert to fraction form
    8,128.92/11,217.88 = 4,402.92/x
  3. Step 3: Cross multiply
    8,128.92x = 11,217.88 × 4,402.92
  4. Step 4: Simplify right side
    8,128.92x = 49,391,428.21
  5. Step 5: Solve for x
    x = 49,391,428.21/8,128.92
  6. Step 6: Final answer
    x = 6,076.01

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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.