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Finding the Fourth Proportional to 3,647.58, 5,470.21 and 1,181.94

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Solution

The fourth proportional to 3,647.58, 5,470.21 and 1,181.94 is: 1,772.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,647.58 : 5,470.21 = 1,181.94 : x
  2. Step 2: Convert to fraction form
    3,647.58/5,470.21 = 1,181.94/x
  3. Step 3: Cross multiply
    3,647.58x = 5,470.21 × 1,181.94
  4. Step 4: Simplify right side
    3,647.58x = 6,465,460.01
  5. Step 5: Solve for x
    x = 6,465,460.01/3,647.58
  6. Step 6: Final answer
    x = 1,772.53

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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.