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Finding the Fourth Proportional to 3,651.53, 5,039.11 and 1,972.94

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Solution

The fourth proportional to 3,651.53, 5,039.11 and 1,972.94 is: 2,722.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.53 : 5,039.11 = 1,972.94 : x
  2. Step 2: Convert to fraction form
    3,651.53/5,039.11 = 1,972.94/x
  3. Step 3: Cross multiply
    3,651.53x = 5,039.11 × 1,972.94
  4. Step 4: Simplify right side
    3,651.53x = 9,941,869.35
  5. Step 5: Solve for x
    x = 9,941,869.35/3,651.53
  6. Step 6: Final answer
    x = 2,722.66

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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.