Home / 8,128.05-11,213.39-4,941.41

Finding the Fourth Proportional to 8,128.05, 11,213.39 and 4,941.41

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Solution

The fourth proportional to 8,128.05, 11,213.39 and 4,941.41 is: 6,817.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.05 : 11,213.39 = 4,941.41 : x
  2. Step 2: Convert to fraction form
    8,128.05/11,213.39 = 4,941.41/x
  3. Step 3: Cross multiply
    8,128.05x = 11,213.39 × 4,941.41
  4. Step 4: Simplify right side
    8,128.05x = 55,409,885.97
  5. Step 5: Solve for x
    x = 55,409,885.97/8,128.05
  6. Step 6: Final answer
    x = 6,817.12

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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.