Home / 8,511.75-12,756.84-3,826.76

Finding the Fourth Proportional to 8,511.75, 12,756.84 and 3,826.76

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Solution

The fourth proportional to 8,511.75, 12,756.84 and 3,826.76 is: 5,735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.75 : 12,756.84 = 3,826.76 : x
  2. Step 2: Convert to fraction form
    8,511.75/12,756.84 = 3,826.76/x
  3. Step 3: Cross multiply
    8,511.75x = 12,756.84 × 3,826.76
  4. Step 4: Simplify right side
    8,511.75x = 48,817,301.25
  5. Step 5: Solve for x
    x = 48,817,301.25/8,511.75
  6. Step 6: Final answer
    x = 5,735.28

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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.