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Finding the Fourth Proportional to 3,158.84, 4,739.34 and 1,404.92

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Solution

The fourth proportional to 3,158.84, 4,739.34 and 1,404.92 is: 2,107.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.84 : 4,739.34 = 1,404.92 : x
  2. Step 2: Convert to fraction form
    3,158.84/4,739.34 = 1,404.92/x
  3. Step 3: Cross multiply
    3,158.84x = 4,739.34 × 1,404.92
  4. Step 4: Simplify right side
    3,158.84x = 6,658,393.55
  5. Step 5: Solve for x
    x = 6,658,393.55/3,158.84
  6. Step 6: Final answer
    x = 2,107.86

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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.