Home / 8,240.33-12,354.62-3,855.40

Finding the Fourth Proportional to 8,240.33, 12,354.62 and 3,855.40

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Solution

The fourth proportional to 8,240.33, 12,354.62 and 3,855.40 is: 5,780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,240.33 : 12,354.62 = 3,855.40 : x
  2. Step 2: Convert to fraction form
    8,240.33/12,354.62 = 3,855.40/x
  3. Step 3: Cross multiply
    8,240.33x = 12,354.62 × 3,855.40
  4. Step 4: Simplify right side
    8,240.33x = 47,631,951.78
  5. Step 5: Solve for x
    x = 47,631,951.78/8,240.33
  6. Step 6: Final answer
    x = 5,780.34

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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.