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Finding the Fourth Proportional to 2,636.92, 3,956.12 and 993.16

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Solution

The fourth proportional to 2,636.92, 3,956.12 and 993.16 is: 1,490.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.92 : 3,956.12 = 993.16 : x
  2. Step 2: Convert to fraction form
    2,636.92/3,956.12 = 993.16/x
  3. Step 3: Cross multiply
    2,636.92x = 3,956.12 × 993.16
  4. Step 4: Simplify right side
    2,636.92x = 3,929,060.14
  5. Step 5: Solve for x
    x = 3,929,060.14/2,636.92
  6. Step 6: Final answer
    x = 1,490.02

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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.