Home / 3,949.51-5,924.67-1,280.43

Finding the Fourth Proportional to 3,949.51, 5,924.67 and 1,280.43

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Solution

The fourth proportional to 3,949.51, 5,924.67 and 1,280.43 is: 1,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.51 : 5,924.67 = 1,280.43 : x
  2. Step 2: Convert to fraction form
    3,949.51/5,924.67 = 1,280.43/x
  3. Step 3: Cross multiply
    3,949.51x = 5,924.67 × 1,280.43
  4. Step 4: Simplify right side
    3,949.51x = 7,586,125.21
  5. Step 5: Solve for x
    x = 7,586,125.21/3,949.51
  6. Step 6: Final answer
    x = 1,920.78

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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.