Home / 5,091.12-7,642.92-3,147.12

Finding the Fourth Proportional to 5,091.12, 7,642.92 and 3,147.12

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Solution

The fourth proportional to 5,091.12, 7,642.92 and 3,147.12 is: 4,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.12 : 7,642.92 = 3,147.12 : x
  2. Step 2: Convert to fraction form
    5,091.12/7,642.92 = 3,147.12/x
  3. Step 3: Cross multiply
    5,091.12x = 7,642.92 × 3,147.12
  4. Step 4: Simplify right side
    5,091.12x = 24,053,186.39
  5. Step 5: Solve for x
    x = 24,053,186.39/5,091.12
  6. Step 6: Final answer
    x = 4,724.54

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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.