Home / 8,418.28-12,627.81-3,223.78

Finding the Fourth Proportional to 8,418.28, 12,627.81 and 3,223.78

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Solution

The fourth proportional to 8,418.28, 12,627.81 and 3,223.78 is: 4,835.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.28 : 12,627.81 = 3,223.78 : x
  2. Step 2: Convert to fraction form
    8,418.28/12,627.81 = 3,223.78/x
  3. Step 3: Cross multiply
    8,418.28x = 12,627.81 × 3,223.78
  4. Step 4: Simplify right side
    8,418.28x = 40,709,281.32
  5. Step 5: Solve for x
    x = 40,709,281.32/8,418.28
  6. Step 6: Final answer
    x = 4,835.82

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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.