Home / 2,092.10-3,138.30-631.35

Finding the Fourth Proportional to 2,092.10, 3,138.30 and 631.35

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Solution

The fourth proportional to 2,092.10, 3,138.30 and 631.35 is: 947.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.10 : 3,138.30 = 631.35 : x
  2. Step 2: Convert to fraction form
    2,092.10/3,138.30 = 631.35/x
  3. Step 3: Cross multiply
    2,092.10x = 3,138.30 × 631.35
  4. Step 4: Simplify right side
    2,092.10x = 1,981,365.71
  5. Step 5: Solve for x
    x = 1,981,365.71/2,092.10
  6. Step 6: Final answer
    x = 947.07

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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.