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Finding the Fourth Proportional to 3,354.40, 5,029.80 and 1,404.40

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Solution

The fourth proportional to 3,354.40, 5,029.80 and 1,404.40 is: 2,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,354.40 : 5,029.80 = 1,404.40 : x
  2. Step 2: Convert to fraction form
    3,354.40/5,029.80 = 1,404.40/x
  3. Step 3: Cross multiply
    3,354.40x = 5,029.80 × 1,404.40
  4. Step 4: Simplify right side
    3,354.40x = 7,063,851.12
  5. Step 5: Solve for x
    x = 7,063,851.12/3,354.40
  6. Step 6: Final answer
    x = 2,105.85

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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.