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Finding the Fourth Proportional to 2,958, 4,438.62 and 1,419

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Solution

The fourth proportional to 2,958, 4,438.62 and 1,419 is: 2,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,958 : 4,438.62 = 1,419 : x
  2. Step 2: Convert to fraction form
    2,958/4,438.62 = 1,419/x
  3. Step 3: Cross multiply
    2,958x = 4,438.62 × 1,419
  4. Step 4: Simplify right side
    2,958x = 6,298,401.78
  5. Step 5: Solve for x
    x = 6,298,401.78/2,958
  6. Step 6: Final answer
    x = 2,129.28

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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.