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Finding the Fourth Proportional to 3,992.41, 5,988.84 and 1,219.51

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Solution

The fourth proportional to 3,992.41, 5,988.84 and 1,219.51 is: 1,829.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.41 : 5,988.84 = 1,219.51 : x
  2. Step 2: Convert to fraction form
    3,992.41/5,988.84 = 1,219.51/x
  3. Step 3: Cross multiply
    3,992.41x = 5,988.84 × 1,219.51
  4. Step 4: Simplify right side
    3,992.41x = 7,303,450.27
  5. Step 5: Solve for x
    x = 7,303,450.27/3,992.41
  6. Step 6: Final answer
    x = 1,829.33

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Double scale
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Similar ratio
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1.5x scale

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.