Home / 8,751.28-13,128.58-2,829.76

Finding the Fourth Proportional to 8,751.28, 13,128.58 and 2,829.76

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Solution

The fourth proportional to 8,751.28, 13,128.58 and 2,829.76 is: 4,245.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.28 : 13,128.58 = 2,829.76 : x
  2. Step 2: Convert to fraction form
    8,751.28/13,128.58 = 2,829.76/x
  3. Step 3: Cross multiply
    8,751.28x = 13,128.58 × 2,829.76
  4. Step 4: Simplify right side
    8,751.28x = 37,150,730.54
  5. Step 5: Solve for x
    x = 37,150,730.54/8,751.28
  6. Step 6: Final answer
    x = 4,245.18

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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.