Home / 8,235.21-12,354.78-2,688.56

Finding the Fourth Proportional to 8,235.21, 12,354.78 and 2,688.56

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Solution

The fourth proportional to 8,235.21, 12,354.78 and 2,688.56 is: 4,033.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.21 : 12,354.78 = 2,688.56 : x
  2. Step 2: Convert to fraction form
    8,235.21/12,354.78 = 2,688.56/x
  3. Step 3: Cross multiply
    8,235.21x = 12,354.78 × 2,688.56
  4. Step 4: Simplify right side
    8,235.21x = 33,216,553.87
  5. Step 5: Solve for x
    x = 33,216,553.87/8,235.21
  6. Step 6: Final answer
    x = 4,033.48

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1.5x scale

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.