Home / 7,851.24-11,776.86-3,231.72

Finding the Fourth Proportional to 7,851.24, 11,776.86 and 3,231.72

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Solution

The fourth proportional to 7,851.24, 11,776.86 and 3,231.72 is: 4,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.24 : 11,776.86 = 3,231.72 : x
  2. Step 2: Convert to fraction form
    7,851.24/11,776.86 = 3,231.72/x
  3. Step 3: Cross multiply
    7,851.24x = 11,776.86 × 3,231.72
  4. Step 4: Simplify right side
    7,851.24x = 38,059,514.00
  5. Step 5: Solve for x
    x = 38,059,514.00/7,851.24
  6. Step 6: Final answer
    x = 4,847.58

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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.