Home / 8,103.43-12,156.81-3,423.43

Finding the Fourth Proportional to 8,103.43, 12,156.81 and 3,423.43

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Solution

The fourth proportional to 8,103.43, 12,156.81 and 3,423.43 is: 5,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.43 : 12,156.81 = 3,423.43 : x
  2. Step 2: Convert to fraction form
    8,103.43/12,156.81 = 3,423.43/x
  3. Step 3: Cross multiply
    8,103.43x = 12,156.81 × 3,423.43
  4. Step 4: Simplify right side
    8,103.43x = 41,617,988.06
  5. Step 5: Solve for x
    x = 41,617,988.06/8,103.43
  6. Step 6: Final answer
    x = 5,135.85

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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.