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Finding the Fourth Proportional to 2,651.91, 3,977.97 and 896.95

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Solution

The fourth proportional to 2,651.91, 3,977.97 and 896.95 is: 1,345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.91 : 3,977.97 = 896.95 : x
  2. Step 2: Convert to fraction form
    2,651.91/3,977.97 = 896.95/x
  3. Step 3: Cross multiply
    2,651.91x = 3,977.97 × 896.95
  4. Step 4: Simplify right side
    2,651.91x = 3,568,040.19
  5. Step 5: Solve for x
    x = 3,568,040.19/2,651.91
  6. Step 6: Final answer
    x = 1,345.46

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Double scale
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Similar ratio
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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.