Home / 1,914.27-2,866.85-1,329.86

Finding the Fourth Proportional to 1,914.27, 2,866.85 and 1,329.86

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Solution

The fourth proportional to 1,914.27, 2,866.85 and 1,329.86 is: 1,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.27 : 2,866.85 = 1,329.86 : x
  2. Step 2: Convert to fraction form
    1,914.27/2,866.85 = 1,329.86/x
  3. Step 3: Cross multiply
    1,914.27x = 2,866.85 × 1,329.86
  4. Step 4: Simplify right side
    1,914.27x = 3,812,488.16
  5. Step 5: Solve for x
    x = 3,812,488.16/1,914.27
  6. Step 6: Final answer
    x = 1,991.61

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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.