Home / 3,677.64-5,517.32-1,212.72

Finding the Fourth Proportional to 3,677.64, 5,517.32 and 1,212.72

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Solution

The fourth proportional to 3,677.64, 5,517.32 and 1,212.72 is: 1,819.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,677.64 : 5,517.32 = 1,212.72 : x
  2. Step 2: Convert to fraction form
    3,677.64/5,517.32 = 1,212.72/x
  3. Step 3: Cross multiply
    3,677.64x = 5,517.32 × 1,212.72
  4. Step 4: Simplify right side
    3,677.64x = 6,690,964.31
  5. Step 5: Solve for x
    x = 6,690,964.31/3,677.64
  6. Step 6: Final answer
    x = 1,819.36

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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.