Home / 7,917.33-11,880.05-3,240.80

Finding the Fourth Proportional to 7,917.33, 11,880.05 and 3,240.80

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Solution

The fourth proportional to 7,917.33, 11,880.05 and 3,240.80 is: 4,862.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.33 : 11,880.05 = 3,240.80 : x
  2. Step 2: Convert to fraction form
    7,917.33/11,880.05 = 3,240.80/x
  3. Step 3: Cross multiply
    7,917.33x = 11,880.05 × 3,240.80
  4. Step 4: Simplify right side
    7,917.33x = 38,500,790.44
  5. Step 5: Solve for x
    x = 38,500,790.44/7,917.33
  6. Step 6: Final answer
    x = 4,862.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.