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Finding the Fourth Proportional to 2,771.61, 4,157.91 and 922.54

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Solution

The fourth proportional to 2,771.61, 4,157.91 and 922.54 is: 1,383.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.61 : 4,157.91 = 922.54 : x
  2. Step 2: Convert to fraction form
    2,771.61/4,157.91 = 922.54/x
  3. Step 3: Cross multiply
    2,771.61x = 4,157.91 × 922.54
  4. Step 4: Simplify right side
    2,771.61x = 3,835,838.29
  5. Step 5: Solve for x
    x = 3,835,838.29/2,771.61
  6. Step 6: Final answer
    x = 1,383.97

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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.