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Finding the Fourth Proportional to 3,251.76, 4,877.62 and 1,690.96

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Solution

The fourth proportional to 3,251.76, 4,877.62 and 1,690.96 is: 2,536.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.76 : 4,877.62 = 1,690.96 : x
  2. Step 2: Convert to fraction form
    3,251.76/4,877.62 = 1,690.96/x
  3. Step 3: Cross multiply
    3,251.76x = 4,877.62 × 1,690.96
  4. Step 4: Simplify right side
    3,251.76x = 8,247,843.89
  5. Step 5: Solve for x
    x = 8,247,843.89/3,251.76
  6. Step 6: Final answer
    x = 2,536.42

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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.