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Finding the Fourth Proportional to 2,092.96, 3,138.44 and 631.80

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Solution

The fourth proportional to 2,092.96, 3,138.44 and 631.80 is: 947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.96 : 3,138.44 = 631.80 : x
  2. Step 2: Convert to fraction form
    2,092.96/3,138.44 = 631.80/x
  3. Step 3: Cross multiply
    2,092.96x = 3,138.44 × 631.80
  4. Step 4: Simplify right side
    2,092.96x = 1,982,866.39
  5. Step 5: Solve for x
    x = 1,982,866.39/2,092.96
  6. Step 6: Final answer
    x = 947.40

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1.5x scale

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.