Home / 2,092.13-3,138.23-631.29

Finding the Fourth Proportional to 2,092.13, 3,138.23 and 631.29

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Solution

The fourth proportional to 2,092.13, 3,138.23 and 631.29 is: 946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.13 : 3,138.23 = 631.29 : x
  2. Step 2: Convert to fraction form
    2,092.13/3,138.23 = 631.29/x
  3. Step 3: Cross multiply
    2,092.13x = 3,138.23 × 631.29
  4. Step 4: Simplify right side
    2,092.13x = 1,981,133.22
  5. Step 5: Solve for x
    x = 1,981,133.22/2,092.13
  6. Step 6: Final answer
    x = 946.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.