Home / 1,179.36-1,623.24-1,083.78

Finding the Fourth Proportional to 1,179.36, 1,623.24 and 1,083.78

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Solution

The fourth proportional to 1,179.36, 1,623.24 and 1,083.78 is: 1,491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.36 : 1,623.24 = 1,083.78 : x
  2. Step 2: Convert to fraction form
    1,179.36/1,623.24 = 1,083.78/x
  3. Step 3: Cross multiply
    1,179.36x = 1,623.24 × 1,083.78
  4. Step 4: Simplify right side
    1,179.36x = 1,759,235.05
  5. Step 5: Solve for x
    x = 1,759,235.05/1,179.36
  6. Step 6: Final answer
    x = 1,491.69

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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.