Home / 6,515.90-8,991.39-3,826.83

Finding the Fourth Proportional to 6,515.90, 8,991.39 and 3,826.83

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Solution

The fourth proportional to 6,515.90, 8,991.39 and 3,826.83 is: 5,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.90 : 8,991.39 = 3,826.83 : x
  2. Step 2: Convert to fraction form
    6,515.90/8,991.39 = 3,826.83/x
  3. Step 3: Cross multiply
    6,515.90x = 8,991.39 × 3,826.83
  4. Step 4: Simplify right side
    6,515.90x = 34,408,520.99
  5. Step 5: Solve for x
    x = 34,408,520.99/6,515.90
  6. Step 6: Final answer
    x = 5,280.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.