Home / 1,960.91-2,705.84-1,076.71

Finding the Fourth Proportional to 1,960.91, 2,705.84 and 1,076.71

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Solution

The fourth proportional to 1,960.91, 2,705.84 and 1,076.71 is: 1,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.91 : 2,705.84 = 1,076.71 : x
  2. Step 2: Convert to fraction form
    1,960.91/2,705.84 = 1,076.71/x
  3. Step 3: Cross multiply
    1,960.91x = 2,705.84 × 1,076.71
  4. Step 4: Simplify right side
    1,960.91x = 2,913,404.99
  5. Step 5: Solve for x
    x = 2,913,404.99/1,960.91
  6. Step 6: Final answer
    x = 1,485.74

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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.