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Finding the Fourth Proportional to 3,636.64, 5,454.96 and 1,039.42

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Solution

The fourth proportional to 3,636.64, 5,454.96 and 1,039.42 is: 1,559.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.64 : 5,454.96 = 1,039.42 : x
  2. Step 2: Convert to fraction form
    3,636.64/5,454.96 = 1,039.42/x
  3. Step 3: Cross multiply
    3,636.64x = 5,454.96 × 1,039.42
  4. Step 4: Simplify right side
    3,636.64x = 5,669,994.52
  5. Step 5: Solve for x
    x = 5,669,994.52/3,636.64
  6. Step 6: Final answer
    x = 1,559.13

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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.