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Finding the Fourth Proportional to 2,065.72, 2,850.68 and 1,181.68

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Solution

The fourth proportional to 2,065.72, 2,850.68 and 1,181.68 is: 1,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,065.72 : 2,850.68 = 1,181.68 : x
  2. Step 2: Convert to fraction form
    2,065.72/2,850.68 = 1,181.68/x
  3. Step 3: Cross multiply
    2,065.72x = 2,850.68 × 1,181.68
  4. Step 4: Simplify right side
    2,065.72x = 3,368,591.54
  5. Step 5: Solve for x
    x = 3,368,591.54/2,065.72
  6. Step 6: Final answer
    x = 1,630.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.