Home / 1,949.87-2,921.51-1,178.75

Finding the Fourth Proportional to 1,949.87, 2,921.51 and 1,178.75

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Solution

The fourth proportional to 1,949.87, 2,921.51 and 1,178.75 is: 1,766.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.87 : 2,921.51 = 1,178.75 : x
  2. Step 2: Convert to fraction form
    1,949.87/2,921.51 = 1,178.75/x
  3. Step 3: Cross multiply
    1,949.87x = 2,921.51 × 1,178.75
  4. Step 4: Simplify right side
    1,949.87x = 3,443,724.02
  5. Step 5: Solve for x
    x = 3,443,724.02/1,949.87
  6. Step 6: Final answer
    x = 1,766.13

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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.