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Finding the Fourth Proportional to 9,107.39, 13,661.13 and 2,867.15

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Solution

The fourth proportional to 9,107.39, 13,661.13 and 2,867.15 is: 4,300.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.39 : 13,661.13 = 2,867.15 : x
  2. Step 2: Convert to fraction form
    9,107.39/13,661.13 = 2,867.15/x
  3. Step 3: Cross multiply
    9,107.39x = 13,661.13 × 2,867.15
  4. Step 4: Simplify right side
    9,107.39x = 39,168,508.88
  5. Step 5: Solve for x
    x = 39,168,508.88/9,107.39
  6. Step 6: Final answer
    x = 4,300.74

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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.