Home / 8,299.50-12,439.26-3,908.40

Finding the Fourth Proportional to 8,299.50, 12,439.26 and 3,908.40

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Solution

The fourth proportional to 8,299.50, 12,439.26 and 3,908.40 is: 5,857.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,299.50 : 12,439.26 = 3,908.40 : x
  2. Step 2: Convert to fraction form
    8,299.50/12,439.26 = 3,908.40/x
  3. Step 3: Cross multiply
    8,299.50x = 12,439.26 × 3,908.40
  4. Step 4: Simplify right side
    8,299.50x = 48,617,603.78
  5. Step 5: Solve for x
    x = 48,617,603.78/8,299.50
  6. Step 6: Final answer
    x = 5,857.90

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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.