Home / 7,829.15-11,740.79-3,147.57

Finding the Fourth Proportional to 7,829.15, 11,740.79 and 3,147.57

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Solution

The fourth proportional to 7,829.15, 11,740.79 and 3,147.57 is: 4,720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.15 : 11,740.79 = 3,147.57 : x
  2. Step 2: Convert to fraction form
    7,829.15/11,740.79 = 3,147.57/x
  3. Step 3: Cross multiply
    7,829.15x = 11,740.79 × 3,147.57
  4. Step 4: Simplify right side
    7,829.15x = 36,954,958.38
  5. Step 5: Solve for x
    x = 36,954,958.38/7,829.15
  6. Step 6: Final answer
    x = 4,720.18

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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.