Home / 1,631.29-2,251.16-932.80

Finding the Fourth Proportional to 1,631.29, 2,251.16 and 932.80

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Solution

The fourth proportional to 1,631.29, 2,251.16 and 932.80 is: 1,287.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.29 : 2,251.16 = 932.80 : x
  2. Step 2: Convert to fraction form
    1,631.29/2,251.16 = 932.80/x
  3. Step 3: Cross multiply
    1,631.29x = 2,251.16 × 932.80
  4. Step 4: Simplify right side
    1,631.29x = 2,099,882.05
  5. Step 5: Solve for x
    x = 2,099,882.05/1,631.29
  6. Step 6: Final answer
    x = 1,287.25

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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.