Home / 8,439.36-12,664.07-3,759.65

Finding the Fourth Proportional to 8,439.36, 12,664.07 and 3,759.65

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Solution

The fourth proportional to 8,439.36, 12,664.07 and 3,759.65 is: 5,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.36 : 12,664.07 = 3,759.65 : x
  2. Step 2: Convert to fraction form
    8,439.36/12,664.07 = 3,759.65/x
  3. Step 3: Cross multiply
    8,439.36x = 12,664.07 × 3,759.65
  4. Step 4: Simplify right side
    8,439.36x = 47,612,388.66
  5. Step 5: Solve for x
    x = 47,612,388.66/8,439.36
  6. Step 6: Final answer
    x = 5,641.71

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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.