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Finding the Fourth Proportional to 2,092.35, 3,138.63 and 631.11

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Solution

The fourth proportional to 2,092.35, 3,138.63 and 631.11 is: 946.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.35 : 3,138.63 = 631.11 : x
  2. Step 2: Convert to fraction form
    2,092.35/3,138.63 = 631.11/x
  3. Step 3: Cross multiply
    2,092.35x = 3,138.63 × 631.11
  4. Step 4: Simplify right side
    2,092.35x = 1,980,820.78
  5. Step 5: Solve for x
    x = 1,980,820.78/2,092.35
  6. Step 6: Final answer
    x = 946.70

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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.