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Finding the Fourth Proportional to 3,392.97, 5,089.41 and 927.78

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Solution

The fourth proportional to 3,392.97, 5,089.41 and 927.78 is: 1,391.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.97 : 5,089.41 = 927.78 : x
  2. Step 2: Convert to fraction form
    3,392.97/5,089.41 = 927.78/x
  3. Step 3: Cross multiply
    3,392.97x = 5,089.41 × 927.78
  4. Step 4: Simplify right side
    3,392.97x = 4,721,852.81
  5. Step 5: Solve for x
    x = 4,721,852.81/3,392.97
  6. Step 6: Final answer
    x = 1,391.66

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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.