Home / 8,091.76-12,140.60-3,412.94

Finding the Fourth Proportional to 8,091.76, 12,140.60 and 3,412.94

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Solution

The fourth proportional to 8,091.76, 12,140.60 and 3,412.94 is: 5,120.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.76 : 12,140.60 = 3,412.94 : x
  2. Step 2: Convert to fraction form
    8,091.76/12,140.60 = 3,412.94/x
  3. Step 3: Cross multiply
    8,091.76x = 12,140.60 × 3,412.94
  4. Step 4: Simplify right side
    8,091.76x = 41,435,139.36
  5. Step 5: Solve for x
    x = 41,435,139.36/8,091.76
  6. Step 6: Final answer
    x = 5,120.66

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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.