Home / 1,949.75-2,921.32-1,178.63

Finding the Fourth Proportional to 1,949.75, 2,921.32 and 1,178.63

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Solution

The fourth proportional to 1,949.75, 2,921.32 and 1,178.63 is: 1,765.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.75 : 2,921.32 = 1,178.63 : x
  2. Step 2: Convert to fraction form
    1,949.75/2,921.32 = 1,178.63/x
  3. Step 3: Cross multiply
    1,949.75x = 2,921.32 × 1,178.63
  4. Step 4: Simplify right side
    1,949.75x = 3,443,137.84
  5. Step 5: Solve for x
    x = 3,443,137.84/1,949.75
  6. Step 6: Final answer
    x = 1,765.94

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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.