Home / 8,213.47-11,341.23-7,800.67

Finding the Fourth Proportional to 8,213.47, 11,341.23 and 7,800.67

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Solution

The fourth proportional to 8,213.47, 11,341.23 and 7,800.67 is: 10,771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.47 : 11,341.23 = 7,800.67 : x
  2. Step 2: Convert to fraction form
    8,213.47/11,341.23 = 7,800.67/x
  3. Step 3: Cross multiply
    8,213.47x = 11,341.23 × 7,800.67
  4. Step 4: Simplify right side
    8,213.47x = 88,469,177.55
  5. Step 5: Solve for x
    x = 88,469,177.55/8,213.47
  6. Step 6: Final answer
    x = 10,771.23

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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.