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Finding the Fourth Proportional to 2,636.64, 3,954.44 and 1,248.71

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Solution

The fourth proportional to 2,636.64, 3,954.44 and 1,248.71 is: 1,872.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636.64 : 3,954.44 = 1,248.71 : x
  2. Step 2: Convert to fraction form
    2,636.64/3,954.44 = 1,248.71/x
  3. Step 3: Cross multiply
    2,636.64x = 3,954.44 × 1,248.71
  4. Step 4: Simplify right side
    2,636.64x = 4,937,922.76
  5. Step 5: Solve for x
    x = 4,937,922.76/2,636.64
  6. Step 6: Final answer
    x = 1,872.81

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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.