Home / 2,911.29-4,363.83-2,118.75

Finding the Fourth Proportional to 2,911.29, 4,363.83 and 2,118.75

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Solution

The fourth proportional to 2,911.29, 4,363.83 and 2,118.75 is: 3,175.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.29 : 4,363.83 = 2,118.75 : x
  2. Step 2: Convert to fraction form
    2,911.29/4,363.83 = 2,118.75/x
  3. Step 3: Cross multiply
    2,911.29x = 4,363.83 × 2,118.75
  4. Step 4: Simplify right side
    2,911.29x = 9,245,864.81
  5. Step 5: Solve for x
    x = 9,245,864.81/2,911.29
  6. Step 6: Final answer
    x = 3,175.87

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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.