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Finding the Fourth Proportional to 9,170.64, 13,746.84 and 3,620.72

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Solution

The fourth proportional to 9,170.64, 13,746.84 and 3,620.72 is: 5,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.64 : 13,746.84 = 3,620.72 : x
  2. Step 2: Convert to fraction form
    9,170.64/13,746.84 = 3,620.72/x
  3. Step 3: Cross multiply
    9,170.64x = 13,746.84 × 3,620.72
  4. Step 4: Simplify right side
    9,170.64x = 49,773,458.52
  5. Step 5: Solve for x
    x = 49,773,458.52/9,170.64
  6. Step 6: Final answer
    x = 5,427.48

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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.