Home / 7,851.12-11,776.44-2,379.12

Finding the Fourth Proportional to 7,851.12, 11,776.44 and 2,379.12

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Solution

The fourth proportional to 7,851.12, 11,776.44 and 2,379.12 is: 3,568.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.12 : 11,776.44 = 2,379.12 : x
  2. Step 2: Convert to fraction form
    7,851.12/11,776.44 = 2,379.12/x
  3. Step 3: Cross multiply
    7,851.12x = 11,776.44 × 2,379.12
  4. Step 4: Simplify right side
    7,851.12x = 28,017,563.93
  5. Step 5: Solve for x
    x = 28,017,563.93/7,851.12
  6. Step 6: Final answer
    x = 3,568.61

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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.