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Finding the Fourth Proportional to 3,992.99, 5,503.15 and 3,249.41

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Solution

The fourth proportional to 3,992.99, 5,503.15 and 3,249.41 is: 4,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.99 : 5,503.15 = 3,249.41 : x
  2. Step 2: Convert to fraction form
    3,992.99/5,503.15 = 3,249.41/x
  3. Step 3: Cross multiply
    3,992.99x = 5,503.15 × 3,249.41
  4. Step 4: Simplify right side
    3,992.99x = 17,881,990.64
  5. Step 5: Solve for x
    x = 17,881,990.64/3,992.99
  6. Step 6: Final answer
    x = 4,478.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.