Home / 8,119.28-11,213.70-6,348.35

Finding the Fourth Proportional to 8,119.28, 11,213.70 and 6,348.35

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Solution

The fourth proportional to 8,119.28, 11,213.70 and 6,348.35 is: 8,767.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.28 : 11,213.70 = 6,348.35 : x
  2. Step 2: Convert to fraction form
    8,119.28/11,213.70 = 6,348.35/x
  3. Step 3: Cross multiply
    8,119.28x = 11,213.70 × 6,348.35
  4. Step 4: Simplify right side
    8,119.28x = 71,188,492.40
  5. Step 5: Solve for x
    x = 71,188,492.40/8,119.28
  6. Step 6: Final answer
    x = 8,767.83

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Half 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.