Home / 7,923.15-11,885.40-2,079.75

Finding the Fourth Proportional to 7,923.15, 11,885.40 and 2,079.75

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Solution

The fourth proportional to 7,923.15, 11,885.40 and 2,079.75 is: 3,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.15 : 11,885.40 = 2,079.75 : x
  2. Step 2: Convert to fraction form
    7,923.15/11,885.40 = 2,079.75/x
  3. Step 3: Cross multiply
    7,923.15x = 11,885.40 × 2,079.75
  4. Step 4: Simplify right side
    7,923.15x = 24,718,660.65
  5. Step 5: Solve for x
    x = 24,718,660.65/7,923.15
  6. Step 6: Final answer
    x = 3,119.80

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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.