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Finding the Fourth Proportional to 9,078.91, 13,618.44 and 2,505.44

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Solution

The fourth proportional to 9,078.91, 13,618.44 and 2,505.44 is: 3,758.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.91 : 13,618.44 = 2,505.44 : x
  2. Step 2: Convert to fraction form
    9,078.91/13,618.44 = 2,505.44/x
  3. Step 3: Cross multiply
    9,078.91x = 13,618.44 × 2,505.44
  4. Step 4: Simplify right side
    9,078.91x = 34,120,218.36
  5. Step 5: Solve for x
    x = 34,120,218.36/9,078.91
  6. Step 6: Final answer
    x = 3,758.19

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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.