Home / 8,115.77-12,173.05-3,435.59

Finding the Fourth Proportional to 8,115.77, 12,173.05 and 3,435.59

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Solution

The fourth proportional to 8,115.77, 12,173.05 and 3,435.59 is: 5,153.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.77 : 12,173.05 = 3,435.59 : x
  2. Step 2: Convert to fraction form
    8,115.77/12,173.05 = 3,435.59/x
  3. Step 3: Cross multiply
    8,115.77x = 12,173.05 × 3,435.59
  4. Step 4: Simplify right side
    8,115.77x = 41,821,608.85
  5. Step 5: Solve for x
    x = 41,821,608.85/8,115.77
  6. Step 6: Final answer
    x = 5,153.13

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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.