Home / 2,826.36-4,240.62-1,287

Finding the Fourth Proportional to 2,826.36, 4,240.62 and 1,287

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Solution

The fourth proportional to 2,826.36, 4,240.62 and 1,287 is: 1,930.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,826.36 : 4,240.62 = 1,287 : x
  2. Step 2: Convert to fraction form
    2,826.36/4,240.62 = 1,287/x
  3. Step 3: Cross multiply
    2,826.36x = 4,240.62 × 1,287
  4. Step 4: Simplify right side
    2,826.36x = 5,457,677.94
  5. Step 5: Solve for x
    x = 5,457,677.94/2,826.36
  6. Step 6: Final answer
    x = 1,930.99

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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.