Home / 8,739.15-13,103.42-3,929.73

Finding the Fourth Proportional to 8,739.15, 13,103.42 and 3,929.73

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Solution

The fourth proportional to 8,739.15, 13,103.42 and 3,929.73 is: 5,892.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.15 : 13,103.42 = 3,929.73 : x
  2. Step 2: Convert to fraction form
    8,739.15/13,103.42 = 3,929.73/x
  3. Step 3: Cross multiply
    8,739.15x = 13,103.42 × 3,929.73
  4. Step 4: Simplify right side
    8,739.15x = 51,492,883.03
  5. Step 5: Solve for x
    x = 51,492,883.03/8,739.15
  6. Step 6: Final answer
    x = 5,892.21

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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.