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Finding the Fourth Proportional to 2,998.62, 4,493.79 and 1,438.02

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Solution

The fourth proportional to 2,998.62, 4,493.79 and 1,438.02 is: 2,155.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.62 : 4,493.79 = 1,438.02 : x
  2. Step 2: Convert to fraction form
    2,998.62/4,493.79 = 1,438.02/x
  3. Step 3: Cross multiply
    2,998.62x = 4,493.79 × 1,438.02
  4. Step 4: Simplify right side
    2,998.62x = 6,462,159.90
  5. Step 5: Solve for x
    x = 6,462,159.90/2,998.62
  6. Step 6: Final answer
    x = 2,155.04

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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.