Home / 2,251.80-3,107.45-1,243.60

Finding the Fourth Proportional to 2,251.80, 3,107.45 and 1,243.60

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Solution

The fourth proportional to 2,251.80, 3,107.45 and 1,243.60 is: 1,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.80 : 3,107.45 = 1,243.60 : x
  2. Step 2: Convert to fraction form
    2,251.80/3,107.45 = 1,243.60/x
  3. Step 3: Cross multiply
    2,251.80x = 3,107.45 × 1,243.60
  4. Step 4: Simplify right side
    2,251.80x = 3,864,430.64
  5. Step 5: Solve for x
    x = 3,864,430.64/2,251.80
  6. Step 6: Final answer
    x = 1,716.15

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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.