Home / 2,687.31-4,030.11-1,863.09

Finding the Fourth Proportional to 2,687.31, 4,030.11 and 1,863.09

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Solution

The fourth proportional to 2,687.31, 4,030.11 and 1,863.09 is: 2,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.31 : 4,030.11 = 1,863.09 : x
  2. Step 2: Convert to fraction form
    2,687.31/4,030.11 = 1,863.09/x
  3. Step 3: Cross multiply
    2,687.31x = 4,030.11 × 1,863.09
  4. Step 4: Simplify right side
    2,687.31x = 7,508,457.64
  5. Step 5: Solve for x
    x = 7,508,457.64/2,687.31
  6. Step 6: Final answer
    x = 2,794.04

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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.