Home / 2,285.11-3,428.29-1,940.90

Finding the Fourth Proportional to 2,285.11, 3,428.29 and 1,940.90

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Solution

The fourth proportional to 2,285.11, 3,428.29 and 1,940.90 is: 2,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.11 : 3,428.29 = 1,940.90 : x
  2. Step 2: Convert to fraction form
    2,285.11/3,428.29 = 1,940.90/x
  3. Step 3: Cross multiply
    2,285.11x = 3,428.29 × 1,940.90
  4. Step 4: Simplify right side
    2,285.11x = 6,653,953.35
  5. Step 5: Solve for x
    x = 6,653,953.35/2,285.11
  6. Step 6: Final answer
    x = 2,911.87

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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.