Home / 1,976.96-2,960.62-1,281.51

Finding the Fourth Proportional to 1,976.96, 2,960.62 and 1,281.51

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Solution

The fourth proportional to 1,976.96, 2,960.62 and 1,281.51 is: 1,919.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.96 : 2,960.62 = 1,281.51 : x
  2. Step 2: Convert to fraction form
    1,976.96/2,960.62 = 1,281.51/x
  3. Step 3: Cross multiply
    1,976.96x = 2,960.62 × 1,281.51
  4. Step 4: Simplify right side
    1,976.96x = 3,794,060.93
  5. Step 5: Solve for x
    x = 3,794,060.93/1,976.96
  6. Step 6: Final answer
    x = 1,919.14

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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.