Home / 8,119.30-12,178.33-2,275.69

Finding the Fourth Proportional to 8,119.30, 12,178.33 and 2,275.69

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Solution

The fourth proportional to 8,119.30, 12,178.33 and 2,275.69 is: 3,413.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.30 : 12,178.33 = 2,275.69 : x
  2. Step 2: Convert to fraction form
    8,119.30/12,178.33 = 2,275.69/x
  3. Step 3: Cross multiply
    8,119.30x = 12,178.33 × 2,275.69
  4. Step 4: Simplify right side
    8,119.30x = 27,714,103.80
  5. Step 5: Solve for x
    x = 27,714,103.80/8,119.30
  6. Step 6: Final answer
    x = 3,413.36

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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.