Home / 1,979.61-2,732.73-1,183.21

Finding the Fourth Proportional to 1,979.61, 2,732.73 and 1,183.21

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Solution

The fourth proportional to 1,979.61, 2,732.73 and 1,183.21 is: 1,633.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.61 : 2,732.73 = 1,183.21 : x
  2. Step 2: Convert to fraction form
    1,979.61/2,732.73 = 1,183.21/x
  3. Step 3: Cross multiply
    1,979.61x = 2,732.73 × 1,183.21
  4. Step 4: Simplify right side
    1,979.61x = 3,233,393.46
  5. Step 5: Solve for x
    x = 3,233,393.46/1,979.61
  6. Step 6: Final answer
    x = 1,633.35

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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.