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Finding the Fourth Proportional to 3,615.99, 4,990.05 and 2,022.72

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Solution

The fourth proportional to 3,615.99, 4,990.05 and 2,022.72 is: 2,791.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.99 : 4,990.05 = 2,022.72 : x
  2. Step 2: Convert to fraction form
    3,615.99/4,990.05 = 2,022.72/x
  3. Step 3: Cross multiply
    3,615.99x = 4,990.05 × 2,022.72
  4. Step 4: Simplify right side
    3,615.99x = 10,093,473.94
  5. Step 5: Solve for x
    x = 10,093,473.94/3,615.99
  6. Step 6: Final answer
    x = 2,791.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.