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Finding the Fourth Proportional to 4,955.56, 7,431.92 and 1,994

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Solution

The fourth proportional to 4,955.56, 7,431.92 and 1,994 is: 2,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,955.56 : 7,431.92 = 1,994 : x
  2. Step 2: Convert to fraction form
    4,955.56/7,431.92 = 1,994/x
  3. Step 3: Cross multiply
    4,955.56x = 7,431.92 × 1,994
  4. Step 4: Simplify right side
    4,955.56x = 14,819,248.48
  5. Step 5: Solve for x
    x = 14,819,248.48/4,955.56
  6. Step 6: Final answer
    x = 2,990.43

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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.