Home / 5,431.14-8,146.71-2,839.14

Finding the Fourth Proportional to 5,431.14, 8,146.71 and 2,839.14

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Solution

The fourth proportional to 5,431.14, 8,146.71 and 2,839.14 is: 4,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.14 : 8,146.71 = 2,839.14 : x
  2. Step 2: Convert to fraction form
    5,431.14/8,146.71 = 2,839.14/x
  3. Step 3: Cross multiply
    5,431.14x = 8,146.71 × 2,839.14
  4. Step 4: Simplify right side
    5,431.14x = 23,129,650.23
  5. Step 5: Solve for x
    x = 23,129,650.23/5,431.14
  6. Step 6: Final answer
    x = 4,258.71

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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.