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Finding the Fourth Proportional to 2,636.54, 3,954.70 and 662.16

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Solution

The fourth proportional to 2,636.54, 3,954.70 and 662.16 is: 993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.54 : 3,954.70 = 662.16 : x
  2. Step 2: Convert to fraction form
    2,636.54/3,954.70 = 662.16/x
  3. Step 3: Cross multiply
    2,636.54x = 3,954.70 × 662.16
  4. Step 4: Simplify right side
    2,636.54x = 2,618,659.81
  5. Step 5: Solve for x
    x = 2,618,659.81/2,636.54
  6. Step 6: Final answer
    x = 993.22

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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.