Home / 3,129.54-4,318-1,949.77

Finding the Fourth Proportional to 3,129.54, 4,318 and 1,949.77

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Solution

The fourth proportional to 3,129.54, 4,318 and 1,949.77 is: 2,690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.54 : 4,318 = 1,949.77 : x
  2. Step 2: Convert to fraction form
    3,129.54/4,318 = 1,949.77/x
  3. Step 3: Cross multiply
    3,129.54x = 4,318 × 1,949.77
  4. Step 4: Simplify right side
    3,129.54x = 8,419,106.86
  5. Step 5: Solve for x
    x = 8,419,106.86/3,129.54
  6. Step 6: Final answer
    x = 2,690.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.