Home / 2,039.30-2,814.24-1,107.80

Finding the Fourth Proportional to 2,039.30, 2,814.24 and 1,107.80

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Solution

The fourth proportional to 2,039.30, 2,814.24 and 1,107.80 is: 1,528.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,039.30 : 2,814.24 = 1,107.80 : x
  2. Step 2: Convert to fraction form
    2,039.30/2,814.24 = 1,107.80/x
  3. Step 3: Cross multiply
    2,039.30x = 2,814.24 × 1,107.80
  4. Step 4: Simplify right side
    2,039.30x = 3,117,601.00
  5. Step 5: Solve for x
    x = 3,117,601.00/2,039.30
  6. Step 6: Final answer
    x = 1,528.76

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1.5x scale

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.