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Finding the Fourth Proportional to 3,941.90, 5,913.86 and 1,476.90

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Solution

The fourth proportional to 3,941.90, 5,913.86 and 1,476.90 is: 2,215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.90 : 5,913.86 = 1,476.90 : x
  2. Step 2: Convert to fraction form
    3,941.90/5,913.86 = 1,476.90/x
  3. Step 3: Cross multiply
    3,941.90x = 5,913.86 × 1,476.90
  4. Step 4: Simplify right side
    3,941.90x = 8,734,179.83
  5. Step 5: Solve for x
    x = 8,734,179.83/3,941.90
  6. Step 6: Final answer
    x = 2,215.73

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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.