Home / 8,139.75-11,232.66-4,505.69

Finding the Fourth Proportional to 8,139.75, 11,232.66 and 4,505.69

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Solution

The fourth proportional to 8,139.75, 11,232.66 and 4,505.69 is: 6,217.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.75 : 11,232.66 = 4,505.69 : x
  2. Step 2: Convert to fraction form
    8,139.75/11,232.66 = 4,505.69/x
  3. Step 3: Cross multiply
    8,139.75x = 11,232.66 × 4,505.69
  4. Step 4: Simplify right side
    8,139.75x = 50,610,883.84
  5. Step 5: Solve for x
    x = 50,610,883.84/8,139.75
  6. Step 6: Final answer
    x = 6,217.74

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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.