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Finding the Fourth Proportional to 4,913.55, 7,371.72 and 1,993.95

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Solution

The fourth proportional to 4,913.55, 7,371.72 and 1,993.95 is: 2,991.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.55 : 7,371.72 = 1,993.95 : x
  2. Step 2: Convert to fraction form
    4,913.55/7,371.72 = 1,993.95/x
  3. Step 3: Cross multiply
    4,913.55x = 7,371.72 × 1,993.95
  4. Step 4: Simplify right side
    4,913.55x = 14,698,841.09
  5. Step 5: Solve for x
    x = 14,698,841.09/4,913.55
  6. Step 6: Final answer
    x = 2,991.49

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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.