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Finding the Fourth Proportional to 1,447.53, 1,998.84 and 1,373.72

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Solution

The fourth proportional to 1,447.53, 1,998.84 and 1,373.72 is: 1,896.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.53 : 1,998.84 = 1,373.72 : x
  2. Step 2: Convert to fraction form
    1,447.53/1,998.84 = 1,373.72/x
  3. Step 3: Cross multiply
    1,447.53x = 1,998.84 × 1,373.72
  4. Step 4: Simplify right side
    1,447.53x = 2,745,836.49
  5. Step 5: Solve for x
    x = 2,745,836.49/1,447.53
  6. Step 6: Final answer
    x = 1,896.91

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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.