Home / 8,131.90-11,223.87-5,151.81

Finding the Fourth Proportional to 8,131.90, 11,223.87 and 5,151.81

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Solution

The fourth proportional to 8,131.90, 11,223.87 and 5,151.81 is: 7,110.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.90 : 11,223.87 = 5,151.81 : x
  2. Step 2: Convert to fraction form
    8,131.90/11,223.87 = 5,151.81/x
  3. Step 3: Cross multiply
    8,131.90x = 11,223.87 × 5,151.81
  4. Step 4: Simplify right side
    8,131.90x = 57,823,245.70
  5. Step 5: Solve for x
    x = 57,823,245.70/8,131.90
  6. Step 6: Final answer
    x = 7,110.67

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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.