Home / 3,176.40-4,764.60-2,811.90

Finding the Fourth Proportional to 3,176.40, 4,764.60 and 2,811.90

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Solution

The fourth proportional to 3,176.40, 4,764.60 and 2,811.90 is: 4,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,176.40 : 4,764.60 = 2,811.90 : x
  2. Step 2: Convert to fraction form
    3,176.40/4,764.60 = 2,811.90/x
  3. Step 3: Cross multiply
    3,176.40x = 4,764.60 × 2,811.90
  4. Step 4: Simplify right side
    3,176.40x = 13,397,578.74
  5. Step 5: Solve for x
    x = 13,397,578.74/3,176.40
  6. Step 6: Final answer
    x = 4,217.85

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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.