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Finding the Fourth Proportional to 3,994.32, 5,979.15 and 2,955.54

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Solution

The fourth proportional to 3,994.32, 5,979.15 and 2,955.54 is: 4,424.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.32 : 5,979.15 = 2,955.54 : x
  2. Step 2: Convert to fraction form
    3,994.32/5,979.15 = 2,955.54/x
  3. Step 3: Cross multiply
    3,994.32x = 5,979.15 × 2,955.54
  4. Step 4: Simplify right side
    3,994.32x = 17,671,616.99
  5. Step 5: Solve for x
    x = 17,671,616.99/3,994.32
  6. Step 6: Final answer
    x = 4,424.19

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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.