Home / 1,979.37-2,731.23-1,182.45

Finding the Fourth Proportional to 1,979.37, 2,731.23 and 1,182.45

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Solution

The fourth proportional to 1,979.37, 2,731.23 and 1,182.45 is: 1,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.37 : 2,731.23 = 1,182.45 : x
  2. Step 2: Convert to fraction form
    1,979.37/2,731.23 = 1,182.45/x
  3. Step 3: Cross multiply
    1,979.37x = 2,731.23 × 1,182.45
  4. Step 4: Simplify right side
    1,979.37x = 3,229,542.91
  5. Step 5: Solve for x
    x = 3,229,542.91/1,979.37
  6. Step 6: Final answer
    x = 1,631.60

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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.