Home / 8,077.26-12,113.55-3,145.80

Finding the Fourth Proportional to 8,077.26, 12,113.55 and 3,145.80

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Solution

The fourth proportional to 8,077.26, 12,113.55 and 3,145.80 is: 4,717.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.26 : 12,113.55 = 3,145.80 : x
  2. Step 2: Convert to fraction form
    8,077.26/12,113.55 = 3,145.80/x
  3. Step 3: Cross multiply
    8,077.26x = 12,113.55 × 3,145.80
  4. Step 4: Simplify right side
    8,077.26x = 38,106,805.59
  5. Step 5: Solve for x
    x = 38,106,805.59/8,077.26
  6. Step 6: Final answer
    x = 4,717.79

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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.