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Finding the Fourth Proportional to 3,992.07, 5,984.06 and 1,909.02

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Solution

The fourth proportional to 3,992.07, 5,984.06 and 1,909.02 is: 2,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.07 : 5,984.06 = 1,909.02 : x
  2. Step 2: Convert to fraction form
    3,992.07/5,984.06 = 1,909.02/x
  3. Step 3: Cross multiply
    3,992.07x = 5,984.06 × 1,909.02
  4. Step 4: Simplify right side
    3,992.07x = 11,423,690.22
  5. Step 5: Solve for x
    x = 11,423,690.22/3,992.07
  6. Step 6: Final answer
    x = 2,861.60

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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.