Home / 8,435.96-12,651.36-3,240.56

Finding the Fourth Proportional to 8,435.96, 12,651.36 and 3,240.56

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Solution

The fourth proportional to 8,435.96, 12,651.36 and 3,240.56 is: 4,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.96 : 12,651.36 = 3,240.56 : x
  2. Step 2: Convert to fraction form
    8,435.96/12,651.36 = 3,240.56/x
  3. Step 3: Cross multiply
    8,435.96x = 12,651.36 × 3,240.56
  4. Step 4: Simplify right side
    8,435.96x = 40,997,491.16
  5. Step 5: Solve for x
    x = 40,997,491.16/8,435.96
  6. Step 6: Final answer
    x = 4,859.85

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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.