Home / 1,947.24-2,687.30-1,107.99

Finding the Fourth Proportional to 1,947.24, 2,687.30 and 1,107.99

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Solution

The fourth proportional to 1,947.24, 2,687.30 and 1,107.99 is: 1,529.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.24 : 2,687.30 = 1,107.99 : x
  2. Step 2: Convert to fraction form
    1,947.24/2,687.30 = 1,107.99/x
  3. Step 3: Cross multiply
    1,947.24x = 2,687.30 × 1,107.99
  4. Step 4: Simplify right side
    1,947.24x = 2,977,495.99
  5. Step 5: Solve for x
    x = 2,977,495.99/1,947.24
  6. Step 6: Final answer
    x = 1,529.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.