Home / 2,107.31-3,162.68-1,491.60

Finding the Fourth Proportional to 2,107.31, 3,162.68 and 1,491.60

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Solution

The fourth proportional to 2,107.31, 3,162.68 and 1,491.60 is: 2,238.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.31 : 3,162.68 = 1,491.60 : x
  2. Step 2: Convert to fraction form
    2,107.31/3,162.68 = 1,491.60/x
  3. Step 3: Cross multiply
    2,107.31x = 3,162.68 × 1,491.60
  4. Step 4: Simplify right side
    2,107.31x = 4,717,446.03
  5. Step 5: Solve for x
    x = 4,717,446.03/2,107.31
  6. Step 6: Final answer
    x = 2,238.62

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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.